diff --git a/plugins/tasklist/skins/larry/tasklist.css b/plugins/tasklist/skins/larry/tasklist.css
index 2b88c954..20ce2a62 100644
--- a/plugins/tasklist/skins/larry/tasklist.css
+++ b/plugins/tasklist/skins/larry/tasklist.css
@@ -1,1278 +1,1292 @@
 /**
  * Roundcube Taklist plugin styles for skin "Larry"
  *
  * Copyright (C) 2012, Kolab Systems AG <contact@kolabsys.com>
  * Screendesign by FLINT / Büro für Gestaltung, bueroflint.com
  *
  * The contents are subject to the Creative Commons Attribution-ShareAlike
  * License. It is allowed to copy, distribute, transmit and to adapt the work
  * by keeping credits to the original autors in the README file.
  * See http://creativecommons.org/licenses/by-sa/3.0/ for details.
  */
 
 #taskbar a.button-tasklist span.button-inner {
 	background-image: url(buttons.png);
 	background-position: 0 0;
 }
 
 #taskbar a.button-tasklist:hover span.button-inner,
 #taskbar a.button-tasklist.button-selected span.button-inner {
 	background-position: 0 -26px;
 }
 
 ul.toolbarmenu li span.icon.taskadd,
 #attachmentmenu li a.tasklistlink span.icon.taskadd {
 	background-image: url(buttons.png);
 	background-position: -4px -90px;
 }
 
 .tasklistview div.uidialog {
 	display: none;
 }
 
 body.tasklist.attachmentwin #mainscreen {
 	top: 32px;
 }
 
 .tasklistview #mainscreen {
 	min-width: 1000px !important;
 	min-height: 520px !important;
 }
 
 .tasklistview #header {
 	min-width: 1020px !important;
 }
 
 #sidebar {
 	position: absolute;
 	top: 0;
 	left: 0;
 	bottom: 0;
 	width: 240px;
 }
 
 .tasklistview #searchmenulink {
 	width: 15px;
 }
 
 #tagsbox {
 	position: absolute;
 	top: 42px;
 	left: 0;
 	width: 100%;
 	height: 242px;
 }
 
 #tasklistsbox {
 	position: absolute;
 	top: 300px;
 	left: 0;
 	width: 100%;
 	bottom: 0px;
 }
 
 #tasklistsbox .boxtitle a.iconbutton.search {
 	position: absolute;
 	top: 8px;
 	right: 8px;
 	width: 16px;
 	cursor: pointer;
 	background-position: -2px -317px;
 }
 
 #tasklistsbox .listsearchbox {
 	display: none;
 }
 
 #tasklistsbox .listsearchbox.expanded {
 	display: block;
 }
 
 #tasklistsbox .scroller {
 	top: 34px;
 }
 
 #tasklistsbox .listsearchbox.expanded + .scroller {
 	top: 68px;
 }
 
 
 #taskselector {
 	margin: -1px 40px 0 0;
 	padding: 0;
 }
 
 #taskselector li {
 	display: inline-block;
 	position: relative;
 	font-size: 90%;
 	padding-right: 0.3em;
 }
 
 .tagcloud li,
 #taskselector li a {
 	display: inline-block;
 	color: #004458;
 	min-width: 3.5em;
 	padding: 0.2em 0.6em 0.2em 0.6em;
 	text-align: center;
 	text-decoration: none;
 	border: 1px solid #eee;
 	border-color: transparent;
 }
 
 .webkit .tagcloud li,
 .webkit #taskselector li a {
 	padding-bottom: 0.25em;
 }
 
 
 #taskselector li:first-child {
 	border-top: 0;
 	border-radius: 4px 4px 0 0;
 }
 
 #taskselector li:last-child {
 	border-bottom: 0;
 	border-radius: 0 0 4px 4px;
 }
 
 #taskselector li.overdue a {
 	color: #b72a2a;
 	font-weight: bold;
 }
 
 #taskselector li.inactive a {
 	color: #97b3bf;
 }
 
 .tagcloud li.selected,
 #taskselector li.selected a {
 	color: #fff;
 	background: #005d76;
 	background: -moz-linear-gradient(top, #005d76 0%, #004558 100%);
 	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#005d76), color-stop(100%,#004558));
 	background: -o-linear-gradient(top, #005d76 0%, #004558 100%);
 	background: -ms-linear-gradient(top, #005d76 0%, #004558 100%);
 	background: linear-gradient(top, #005d76 0%, #004558 100%);
 	box-shadow: inset 0 1px 1px 0 #003645;
 	-o-box-shadow: inset 0 1px 1px 0 #003645;
 	-webkit-box-shadow: inset 0 1px 1px 0 #003645;
 	-moz-box-shadow: inset 0 1px 1px 0 #003645;
 	border-color: #003645;
 	border-radius: 10px;
 	text-shadow: none;
 }
 
 #taskselector li .count {
 	display: none;
 	position: absolute;
 	top: -18px;
 	right: 5px;
 	min-width: 1.8em;
 	padding: 2px 4px;
 	background: #004558;
 	background: -moz-linear-gradient(top, #005d76 0%, #004558 100%);
 	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#005d76), color-stop(100%,#004558));
 	background: -o-linear-gradient(top, #005d76 0%, #004558 100%);
 	background: -ms-linear-gradient(top, #005d76 0%, #004558 100%);
 	background: linear-gradient(top, #005d76 0%, #004558 100%);
 	box-shadow: 0 1px 2px 0 rgba(24,24,24,0.6);
 	color: #fff;
 	border-radius: 3px;
 	text-align: center;
 	font-weight: bold;
 	font-size: 80%;
 	text-shadow: none;
 }
 
 #taskselector li .count:after {
 	content: "";
 	position: absolute;
 	bottom: -5px;
 	left: 50%;
 	margin-left: -5px;
 	border-style: solid;
 	border-width: 5px 5px 0;
 	border-color: #004558 transparent;
 	/* reduce the damage in FF3.0 */
 	display: block; 
 	width: 0;
 }
 
 #taskselector li.overdue .count {
 	background: #ff3800;
 }
 
 #taskselector li.overdue .count:after {
 	border-color: #ff3800 transparent;
 }
 
 .tagcloud {
 	padding: 0;
 	margin: 6px;
 	list-style: none;
 }
 
 .tagcloud li {
 	display: inline-block;
 	color: #004458;
 	padding-right: 0.2em;
 	margin-right: 0.3em;
 	margin-bottom: 0.4em;
 	min-width: 1.2em;
 	cursor: pointer;
 }
 
 .tagcloud li.inactive {
 	color: #89b3be;
 	padding-right: 0.6em;
 	font-size: 80%;
 /*	display: none; */
 }
 
 .tagcloud li .count {
 	position: relative;
 	top: -1px;
 	margin-left: 5px;
 	padding: 0.15em 0.5em;
 	font-size: 80%;
 	font-weight: bold;
 	color: #59838e;
 	background: #c7e3ef;
 	box-shadow: inset 0 1px 1px 0 #b0ccd7;
 	-o-box-shadow: inset 0 1px 1px 0 #b0ccd7;
 	-webkit-box-shadow: inset 0 1px 1px 0 #b0ccd7;
 	-moz-box-shadow: inset 0 1px 1px 0 #b0ccd7;
 	border-color: #b0ccd7;
 	border-radius: 8px;
 }
 
 .tag-draghelper .tag .count,
 .tagcloud li.inactive .count {
 	display: none;
 }
 
 #tasklistsbox .treelist li {
 	margin: 0;
 	display: block;
 	position: relative;
 }
 
 #tasklistsbox .treelist li div.tasklist {
 	margin: 0;
 	height: 20px;
 	padding: 6px 8px 2px 6px;
 	position: relative;
 	white-space: nowrap;
 }
 
 #tasklistsbox .treelist li.virtual > div.tasklist {
 	height: 14px;
 }
 
 #tasklistsbox .treelist ul li > div.tasklist {
 	margin-left: 16px;
 }
 
 #tasklistsbox .treelist ul ul li > div.tasklist {
 	margin-left: 32px;
 }
 
 #tasklistsbox .treelist ul ul ul li > div.tasklist {
 	margin-left: 48px;
 }
 
 #tasklistsbox .treelist li label {
 	display: block;
 }
 
 #tasklistsbox .treelist li span.listname {
 	display: block;
 	position: absolute;
 	top: 7px;
 	left: 38px;
 	right: 40px;
 	cursor: default;
 	padding: 0px 30px 2px 2px;
 	color: #004458;
 	overflow: hidden;
 	text-overflow: ellipsis;
 	white-space: nowrap;
 	background: url(sprites.png) right 20px no-repeat;
 }
 
+.quickview-active #tasklistsbox .treelist li input,
+.quickview-active #tasklistsbox .treelist li span.listname {
+	opacity: 0.35;
+}
+
+.quickview-active #tasklistsbox .treelist div.focusview span.listname {
+	opacity: 1.0;
+}
+
 #tasklistsbox .treelist div span.actions {
 	display: inline-block;
 	position: absolute;
 	top: 2px;
 	right: 2px;
 	padding: 5px 20px 0 6px;
 	min-width: 40px;
 	height: 19px;
 	text-align: right;
 }
 
 #tasklistsbox .treelist div:hover span.actions {
 	top: 1px;
 	right: 1px;
 	border: 1px solid #c6c6c6;
 	border-radius: 4px;
 	background: #f7f7f7;
 	background: -moz-linear-gradient(top, #f9f9f9 0%, #e6e6e6 100%);
 	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#f9f9f9), color-stop(100%,#e6e6e6));
 	background: -o-linear-gradient(top, #f9f9f9 0%, #e6e6e6 100%);
 	background: -ms-linear-gradient(top, #f9f9f9 0%, #e6e6e6 100%);
 	background: linear-gradient(top, #f9f9f9 0%, #e6e6e6 100%);
 	filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#f9f9f9', endColorstr='#e6e6e6', GradientType=0);
 }
 
 #tasklistsbox .treelist div a.remove,
 #tasklistsbox .treelist div a.quickview,
 #tasklistsbox .treelist div a.subscribed {
 	display: inline-block;
 	width: 16px;
 	height: 16px;
 	padding: 0;
 	margin-right: 4px;
 	background: url(sprites.png) -200px 0 no-repeat;
 	overflow: hidden;
 	text-indent: -5000px;
 	cursor: pointer;
 }
 
 #tasklistsbox .treelist div a.subscribed {
 	position: absolute;
 	top: 5px;
 	right: 4px;
 	margin: 0;
 }
 
 #tasklistsbox .treelist div a.subscribed:focus,
 #tasklistsbox .treelist div:hover a.subscribed {
 	background-position: -2px -215px;
 }
 
 #tasklistsbox .treelist div.subscribed a.subscribed {
 	background-position: -20px -215px;
 }
 
 #tasklistsbox .treelist div a.quickview:focus,
 #tasklistsbox .treelist div:hover a.quickview {
 	background-position: -20px -101px;
 	background-color: transparent !important;
 }
 
 #tasklistsbox .treelist div a.remove:focus,
 #tasklistsbox .treelist div:hover a.remove {
 	background-position: -2px -371px;
 	background-color: transparent !important;
 }
 
 #tasklistsbox .treelist div.focusview a.quickview {
 	background-position: -2px -101px;
 }
 
 #tasklistsbox .searchresults .treelist div a.remove,
 #tasklistsbox .searchresults .treelist div a.quickview {
 	display: none;
 }
 
 #tasklistsbox .treelist div a.remove:focus,
 #tasklistsbox .treelist div a.quickview:focus,
 #tasklistsbox .treelist div a.subscribed:focus {
 	border-radius: 3px;
 	outline: 2px solid rgba(30,150,192, 0.5);
 }
 
 #tasklistsbox .treelist li.selected > div > span.listname {
 	font-weight: bold;
 }
 
 #tasklistsbox .treelist .readonly > span.listname {
 	background-position: right -142px;
 }
 
 #tasklistsbox .treelist .user > span.listname {
 	background-position: right -160px;
 }
 
 #tasklistsbox .treelist .virtual > span.listname {
 	color: #aaa;
 	top: 4px;
 	left: 20px;
 	right: 5px;
 }
 
 #tasklistsbox .treelist.flat li span.calname {
 	left: 24px;
 	right: 22px;
 }
 
 #tasklistsbox .treelist li input {
 	position: absolute;
 	top: 5px;
 	left: 18px;
 }
 
 #tasklistsbox .treelist li .treetoggle {
 	top: 8px;
 }
 
 #tasklistsbox .treelist li.virtual > .treetoggle {
 	top: 6px;
 }
 
 #tasklistsbox .searchresults {
 	background: #b0ccd7;
 	margin-top: 8px;
 }
 
 #tasklistsbox .searchresults .boxtitle {
 	background: none;
 	padding: 2px 8px 2px 8px;
 }
 
 #tasklistsbox .searchresults .listing li {
 	background-color: #c7e3ef;
 }
 
 #mainview-right {
 	position: absolute;
 	top: 0;
 	left: 256px;
 	right: 0;
 	bottom: 0;
 }
 
 #taskstoolbar {
 	position: absolute;
 	top: -6px;
 	left: 0;
 	width: 100%;
 	height: 40px;
 	white-space: nowrap;
 }
 
 #taskstoolbar a.button.newtask {
 	background-image: url(buttons.png);
 	background-position: center -53px;
 }
 
 #quickaddbox {
 	position: absolute;
 	top: 2px;
 	left: 0;
 	width: 60%;
 	height: 32px;
 	white-space: nowrap;
 }
 
 #quickaddinput {
 	width: 85%;
 	margin: 0;
 	padding: 3px 8px;
 	height: 18px;
 	background: #f1f1f1;
 	background: rgba(255, 255, 255, 0.7);
 	border-color: #a3a3a3;
 	font-weight: bold;
 }
 
 #quickaddbox .button {
 	margin-left: 5px;
 	padding: 3px 10px;
 	font-weight: bold;
 }
 
 #tasksview {
 	position: absolute;
 	top: 42px;
 	left: 0;
 	right: 0;
 	bottom: 0;
-	padding-bottom: 28px;
 	background: rgba(255, 255, 255, 0.2);
 	overflow: visible;
 }
 
+.quickview-active #tasksview {
+	background-image: url('images/focusview.png');
+	background-position: center;
+	background-repeat: no-repeat;
+}
+
 #message.statusbar {
 	border-top: 1px solid #c3c3c3;
 }
 
 #tasksview .scroller {
 	position: absolute;
 	left: 0;
 	top: 35px;
 	width: 100%;
 	bottom: 0;
 	overflow: auto;
 }
 
 #tasksview .buttonbar {
 	color: #777;
 	background: #eee;
 	background: -moz-linear-gradient(top, #eee 0%, #dfdfdf 100%);
 	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#eee), color-stop(100%,#dfdfdf));
 	background: -o-linear-gradient(top, #eee 0%, #dfdfdf 100%);
 	background: -ms-linear-gradient(top, #eee 0%, #dfdfdf 100%);
 	background: linear-gradient(top, #eee 0%, #dfdfdf 100%);
 	border-bottom: 1px solid #ccc;
 	position: relative;
 	line-height: 13px;
 	height: 20px;
 }
 
 #tasksview .buttonbar .buttonbar-right {
 	position: absolute;
 	top: 6px;
 	right: 8px;
 }
 
 .buttonbar-right .listmenu {
 	display: inline-block;
 	cursor: pointer;
 }
 
 .buttonbar-right a.iconbutton {
 	padding: 0;
 	background-image: url(sprites.png);
 	background-position: 0 -238px;
 }
 
 .buttonbar-right a.iconbutton.sorting {
 	background-position: -18px -347px;
 }
 
 #thelist {
 	padding: 0;
 	margin: 1em;
 	list-style: none;
 }
 
 #listmessagebox {
 	display: none;
 	font-size: 14px;
 	color: #666;
 	margin: 1.5em;
 	text-shadow: 0px 1px 1px #fff;
 	text-align:center;
 }
 
 .taskitem {
 	position: relative;
 	display: block;
 	margin-bottom: 3px;
 }
 
 .taskitem.dragging {
 	opacity: 0.5;
 }
 
 .taskitem .childtasks {
 	position: relative;
 	padding: 0;
 	margin: 3px 0 0 20px;
 	list-style: none;
 }
 
 .taskitem .childtoggle {
 	display: none;
 	position: absolute;
 	top: 4px;
 	left: -5px;
 	padding: 2px;
 	font-size: 10px;
 	color: #727272;
 	cursor: pointer;
 	
 	width: 14px;
 	height: 14px;
 	background: url(sprites.png) -2px -80px no-repeat;
 	text-indent: -1000px;
 	overflow: hidden;
 }
 
 .taskitem .childtoggle.collapsed {
 	background-position: -18px -81px;
 }
 
 .taskhead {
 	position: relative;
 	margin-left: 14px;
 	padding: 4px 5px 3px 5px;
 	border: 1px solid #fff;
 	border-radius: 5px;
 	background: #fff;
 	-webkit-box-shadow: 0 1px 1px 0 rgba(50, 50, 50, 0.5);
 	-moz-box-shadow: 0 1px 1px 0 rgba(50, 50, 50, 0.5);
 	box-shadow: 0 1px 1px 0 rgba(50, 50, 50, 0.5);
 	padding-right: 26em;
 	white-space: nowrap;
 	overflow: hidden;
 	text-overflow: ellipsis;
 	cursor: default;
 	outline: none;
 }
 
 .taskhead:focus,
 .taskhead.droptarget {
 	border-color: #4787b1;
 	box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
 	-moz-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
 	-webkit-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
 	-o-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
 }
 
 .taskhead .complete {
 	margin: -1px 1em 0 0;
 }
 
 .taskhead .title {
 	font-size: 12px;
 }
 
 .taskhead .flagged {
 	display: inline-block;
 	width: 16px;
 	height: 16px;
 	background: url(sprites.png) 1000px -3px no-repeat;
 	margin: -3px 1em 0 0;
 	vertical-align: middle;
 	cursor: pointer;
 }
 
 .taskhead .flagged:focus,
 .taskhead:hover .flagged {
 	background-position: -2px -3px;
 }
 
 .taskhead.flagged .flagged {
 	background-position: -2px -23px;
 }
 
 .taskhead .tags {
 	display: block;
 	position: absolute;
 	top: 3px;
 	right: 10em;
 	max-width: 14em;
 	height: 16px;
 	overflow: hidden;
 	padding-top: 1px;
 	text-align: right;
 }
 
 .tag-draghelper .tag,
 .taskhead .tags .tag {
 	font-size: 85%;
 	background: #d9ecf4;
 	border: 1px solid #c2dae5;
 	border-radius: 4px;
 	padding: 1px 7px;
 	margin-right: 3px;
 }
 
 .tag-draghelper li.tag {
 	list-style: none;
 	font-size: 100%;
 }
 
 .taskhead .date {
 	position: absolute;
 	top: 4px;
 	right: 30px;
 	text-align: right;
 	cursor: pointer;
 }
 
 .taskhead.nodate .date {
 	color: #ddd;
 }
 
 .taskhead.overdue .date {
 	color: #d00;
 }
 
 .taskhead.nodate:hover .date {
 	color: #999;
 }
 
 .taskhead .date input {
 	padding: 1px 2px;
 	border: 1px solid #ddd;
 	-webkit-box-shadow: none;
 	-moz-box-shadow: none;
 	box-shadow: none;
 	outline: none;
 	text-align: right;
 	width: 6em;
 	font-size: 11px;
 }
 
 .taskhead .actions {
 	display: block;
 	position: absolute;
 	top: 3px;
 	right: 6px;
 	width: 18px;
 	height: 18px;
 	background: url(sprites.png) 1000px -80px no-repeat;
 	text-indent: -5000px;
 	overflow: hidden;
 	cursor: pointer;
 }
 
 .taskhead .actions:focus,
 .taskhead:hover .actions {
 	background-position: 0 -80px;
 }
 
 .taskhead.complete {
 	opacity: 0.6;
 }
 
 .taskhead.complete .title {
 	text-decoration: line-through;
 }
 
 .taskhead .progressbar {
 	position: absolute;
 	bottom: 1px;
 	left: 6px;
 	right: 6px;
 	height: 2px;
 }
 
 .taskhead.complete .progressbar {
 	display: none;
 }
 
 .taskhead .progressvalue {
 	height: 1px;
 	background: rgba(1, 124, 180, 0.2);
 	border-top: 1px solid #219de6;
 }
 
 ul.toolbarmenu li span.add,
 ul.toolbarmenu li span.expand,
 ul.toolbarmenu li span.collapse,
 ul.toolbarmenu.iconized .selected span.icon {
 	background-image: url(sprites.png);
 }
 
 ul.toolbarmenu li span.add {
 	background-position: 0 -302px;
 }
 
 ul.toolbarmenu li span.expand {
 	background-position: 0 -258px;
 }
 
 ul.toolbarmenu li span.collapse {
 	background-position: 0 -280px;
 }
 
 ul.toolbarmenu li span.delete {
 	background-position: 0 -1508px;
 }
 
 ul.toolbarmenu.iconized .selected span.icon {
 	background-position: 0 -324px;
 }
 
 ul.toolbarmenu .sortcol.by-auto a {
 	font-style: italic;
 }
 
 .taskitem-draghelper {
 /*
 	width: 32px;
 	height: 26px;
 */
 	background: #444;
 	border: 1px solid #555;
 	border-radius: 4px;
 	box-shadow: 0 2px 6px 0 #333;
 	-moz-box-shadow: 0 2px 6px 0 #333;
 	-webkit-box-shadow: 0 2px 6px 0 #333;
 	-o-box-shadow: 0 2px 6px 0 #333;
 	z-index: 5000;
 	padding: 2px 10px;
 	font-size: 20px;
 	color: #ccc;
 	opacity: 0.92;
 	filter: alpha(opacity=90);
 	text-shadow: 0px 1px 1px #333;
 }
 
 #rootdroppable {
 	display: none;
 	position: absolute;
 	top: 2px;
 	left: 1em;
 	right: 1em;
 	height: 5px;
 	background: #ddd;
 	border-radius: 3px;
 }
 
 #rootdroppable.droptarget {
 	background: #4787b1;
 	box-shadow: 0 0 2px 1px rgba(71,135,177, 0.9);
 	-moz-box-shadow: 0 0 2px 1px rgba(71,135,177, 0.9);
 	-webkit-box-shadow: 0 0 2px 1px rgba(71,135,177, 0.9);
 	-o-box-shadow: 0 0 2px 1px rgba(71,135,177, 0.9);
 	
 }
 
 /*** task edit form ***/
 
 #taskedit,
 #taskshow {
 	display:none;
 }
 
 #taskedit {
 	position: relative;
 	top: -1.5em;
 	padding: 0.5em 0.1em;
 	margin: 0 -0.2em;
 }
 
 #taskshow h2 {
 	margin-top: -0.5em;
 }
 
 #taskshow label {
 	color: #999;
 }
 
 #taskshow.status-cancelled {
 	background: url(images/badge_cancelled.png) top right no-repeat;
 }
 
 #task-parent-title {
 	position: relative;
 	top: -0.6em;
 }
 
 a.morelink {
 	font-size: 90%;
 	color: #0069a6;
 	text-decoration: none;
 	outline: none;
 }
 
 a.morelink:hover {
 	text-decoration: underline;
 }
 
 #taskedit .ui-tabs-panel {
 	min-height: 24em;
 }
 
 #taskeditform input.text,
 #taskeditform textarea {
 	width: 97%;
 }
 
 #taskeditform .formbuttons {
 	margin: 0.5em 0;
 }
 
 #taskedit .border-after {
 	padding-bottom: 0.8em;
 	margin-bottom: 0.8em;
 	border-bottom: 2px solid #fafafa;
 }
 
 #taskedit .edit-attendees-table {
 	width: 100%;
 	margin-top: 0.5em;
 }
 
 #taskedit .edit-attendees-table tbody td {
 	padding: 4px 7px;
 }
 
 #taskedit .edit-attendees-table tbody tr:last-child td {
 	border-bottom: 0;
 }
 
 #taskedit .edit-attendees-table th.role,
 #taskedit .edit-attendees-table td.role {
 	width: 9em;
 }
 
 #taskedit .edit-attendees-table th.availability,
 #taskedit .edit-attendees-table td.availability,
 #taskedit .edit-attendees-table th.confirmstate,
 #taskedit .edit-attendees-table td.confirmstate {
 	width: 6em;
 }
 
 #taskedit .edit-attendees-table th.options,
 #taskedit .edit-attendees-table td.options {
 	width: 24px;
 	padding: 2px 4px;
 	text-align: right;
 }
 
 #taskedit .edit-attendees-table th.invite,
 #taskedit .edit-attendees-table td.invite {
 	width: 48px;
 	padding: 2px;
 }
 
 #taskedit .edit-attendees-table th.invite label {
 	display: inline-block;
 	position: relative;
 	top: 4px;
 	width: 24px;
 	height: 18px;
 	min-width: 24px;
 	padding: 0;
 	overflow: hidden;
 	text-indent: -5000px;
 	white-space: nowrap;
 	background: url(images/sendinvitation.png) 1px 0 no-repeat;
 }
 
 #taskedit .edit-attendees-table th.name,
 #taskedit .edit-attendees-table td.name {
 	width: auto;
 	white-space: nowrap;
 	overflow: hidden;
 	text-overflow: ellipsis;
 	position: relative;
 }
 
 #taskedit .edit-attendees-table td.name select {
 	width: 100%;
 }
 
 #taskedit .edit-attendees-table a.deletelink {
 	display: inline-block;
 	width: 17px;
 	height: 17px;
 	padding: 0;
 	overflow: hidden;
 	text-indent: 1000px;
 }
 
 #taskedit .edit-attendees-table a.expandlink {
 	position: absolute;
 	top: 4px;
 	right: 6px;
 	width: 16px;
 	height: 16px;
 }
 
 #edit-attendees-form {
 	position: relative;
 	margin-top: 15px;
 }
 
 #edit-attendees-form .attendees-invitebox {
 	text-align: right;
 	margin: 0;
 }
 
 #edit-attendees-form .attendees-invitebox label {
 	padding-right: 3px;
 }
 
 #taskedit-attachments {
 	margin: 0.6em 0;
 }
 
 #taskedit-attachments ul li {
 	display: block;
 	color: #333;
 	font-weight: bold;
 	padding: 3px 4px 3px 30px;
 	text-shadow: 0px 1px 1px #fff;
 	text-decoration: none;
 	white-space: nowrap;
 	line-height: 20px;
 }
 
 #taskedit-attachments ul li a.file {
 	padding: 0;
 }
 
 #taskedit-attachments-form {
 	margin-top: 1em;
 	padding-top: 0.8em;
 	border-top: 2px solid #fafafa;
 }
 
 div.form-section {
 	position: relative;
 	margin-top: 0.2em;
 	margin-bottom: 0.5em;
 }
 
 .form-section label {
 	display: inline-block;
 	min-width: 7em;
 	padding-right: 0.5em;
 	margin-bottom: 0.3em;
 }
 
 .tasklistview div.form-section span.task-text + label {
 	margin-left: 2em;
 }
 
 label.block {
 	display: block;
 	margin-bottom: 0.3em;
 }
 
 #task-description {
 	margin-bottom: 1em;
 }
 
 #taskedit-completeness-slider {
 	display: inline-block;
 	margin-left: 2em;
 	width: 30em;
 	height: 0.8em;
 	border: 1px solid #ccc;
 }
 
 #taskedit-tagline {
 	width: 97%;
 }
 
 #taskedit .droptarget {
 	background-image: url(../../../../skins/larry/images/filedrop.png) !important;
 	background-position: center bottom !important;
 	background-repeat: no-repeat !important;
 }
 
 #taskedit .droptarget.hover,
 #taskedit .droptarget.active {
 	border-color: #019bc6;
 	box-shadow: 0 0 3px 2px rgba(71,135,177, 0.5);
 	-moz-box-shadow: 0 0 3px 2px rgba(71,135,177, 0.5);
 	-webkit-box-shadow: 0 0 3px 2px rgba(71,135,177, 0.5);
 	-o-box-shadow: 0 0 3px 2px rgba(71,135,177, 0.5);
 }
 
 #taskedit .droptarget.hover {
 	background-color: #d9ecf4;
 	box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
 	-moz-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
 	-webkit-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
 	-o-box-shadow: 0 0 5px 2px rgba(71,135,177, 0.9);
 }
 
 #task-attachments .attachmentslist li {
 	float: left;
 	margin-right: 1em;
 }
 
 #task-attachments .attachmentslist li a {
 	outline: none;
 }
 
 .task-attendees span.attendee {
 	padding-right: 18px;
 	margin-right: 0.5em;
 	background: url(images/attendee-status.png) right 0 no-repeat;
 }
 
 .task-attendees span.attendee a.mailtolink {
 	text-decoration: none;
 	white-space: nowrap;
 	outline: none;
 }
 
 .task-attendees span.attendee a.mailtolink:hover {
 	text-decoration: underline;
 }
 
 .task-attendees span.completed {
 	background-position: right -20px;
 }
 
 .task-attendees span.declined {
 	background-position: right -40px;
 }
 
 .task-attendees span.tentative {
 	background-position: right -60px;
 }
 
 .task-attendees span.delegated {
 	background-position: right -180px;
 }
 
 .task-attendees span.in-process {
 	background-position: right -200px;
 }
 
 .task-attendees span.accepted {
 	background-position: right -220px;
 }
 
 .task-attendees span.organizer {
 	background-position: right 100px;
 }
 
 #all-task-attendees span.attendee {
 	display: block;
 	margin-bottom: 0.4em;
 	padding-bottom: 0.3em;
 	border-bottom: 1px solid #ddd;
 }
 
 .tasklistview .uidialog .tabbed {
 	min-width: 600px;
 }
 
 .tasklistview .uidialog .propform fieldset.ui-tabs-panel {
 	min-height: 290px;
 }
 
 .tasklistview .uidialog .propform #taskedit-tasklistame {
 	width: 20em;
 }
 
 .task-dialog-message {
 	margin-top: 0.5em;
 	padding: 0.8em;
 	border: 1px solid #ffdf0e;
 	background-color: #fef893;
 }
 
 .task-dialog-message .message,
 .task-update-confirm .message {
 	margin-bottom: 0.5em;
 }
 
 /* Invitation UI in mail */
 
 .messagelist tbody .attachment span.ical {
 	display: inline-block;
 	vertical-align: middle;
 	height: 18px;
 	width: 20px;
 	padding: 0;
 	background: url(images/ical-attachment.png) 2px 1px no-repeat;
 }
 
 div.tasklist-invitebox {
 	min-height: 20px;
 	margin: 5px 8px;
 	padding: 3px 6px 6px 34px;
 	border: 1px solid #ffdf0e;
 	background: url(images/tasklist.png) 6px 5px no-repeat #fef893;
 }
 
 div.tasklist-invitebox td.ititle {
 	font-weight: bold;
 	padding-right: 0.5em;
 }
 
 div.tasklist-invitebox td.label {
 	color: #666;
 	padding-right: 1em;
 }
 
 #task-rsvp .rsvp-buttons,
 #task-rsvp .itip-reply-controls,
 div.tasklist-invitebox .itip-buttons div {
 	margin-top: 0.5em;
 }
 
 #task-rsvp .itip-reply-controls a,
 #task-rsvp .itip-reply-controls label {
 	color: #333;
 }
 
 #task-rsvp input.button,
 div.tasklist-invitebox input.button {
 	font-weight: bold;
 	margin-right: 0.5em;
 }
 
 div.tasklist-invitebox .folder-select {
 	font-weight: 10px;
 	margin-left: 1em;
 }
 
 div.tasklist-invitebox .rsvp-status {
 	padding-left: 2px;
 }
 
 div.tasklist-invitebox .rsvp-status.loading {
 	color: #666;
 	padding: 1px 0 2px 24px;
 	background: url(images/loading_blue.gif) top left no-repeat;
 }
 
 div.tasklist-invitebox .rsvp-status.hint {
 	color: #666;
 	text-shadow: none;
 	font-style: italic;
 }
 
 #task-partstat .changersvp,
 .tasklistview .edit-attendees-table td.confirmstate span,
 div.tasklist-invitebox .rsvp-status.declined,
 div.tasklist-invitebox .rsvp-status.tentative,
 div.tasklist-invitebox .rsvp-status.accepted,
 div.tasklist-invitebox .rsvp-status.delegated,
 div.tasklist-invitebox .rsvp-status.in-process,
 div.tasklist-invitebox .rsvp-status.completed,
 div.tasklist-invitebox .rsvp-status.needs-action {
 	padding: 0 0 1px 22px;
 	background: url(images/attendee-status.png) 2px -20px no-repeat;
 }
 
 #task-partstat .changersvp.declined,
 div.tasklist-invitebox .rsvp-status.declined,
 .tasklistview .edit-attendees-table td.confirmstate span.declined {
 	background-position: 2px -40px;
 }
 
 #task-partstat .changersvp.tentative,
 div.tasklist-invitebox .rsvp-status.tentative,
 .tasklistview .edit-attendees-table td.confirmstate span.tentative {
 	background-position: 2px -60px;
 }
 
 #task-partstat .changersvp.delegated,
 div.tasklist-invitebox .rsvp-status.delegated,
 .tasklistview .edit-attendees-table td.confirmstate span.delegated {
 	background-position: 2px -180px;
 }
 
 #task-partstat .changersvp.needs-action,
 div.tasklist-invitebox .rsvp-status.needs-action,
 .tasklistview .edit-attendees-table td.confirmstate span.needs-action {
 	background-position: 2px 0;
 }
 
 #task-partstat .changersvp.in-process,
 div.tasklist-invitebox .rsvp-status.in-process,
 .tasklistview .edit-attendees-table td.confirmstate span.in-process {
 	background-position: 2px -200px;
 }
 
 #task-partstat .changersvp.accepted,
 div.tasklist-invitebox .rsvp-status.accepted,
 .tasklistview .edit-attendees-table td.confirmstate span.accepted {
 	background-position: 2px -220px;
 }
 
 
 /** Special hacks for IE7 **/
 /** They need to be in this file to also affect the task-create dialog embedded in mail view **/
 
 html.ie7 #taskedit-completeness-slider {
 	display: inline;
 }
diff --git a/plugins/tasklist/tasklist.js b/plugins/tasklist/tasklist.js
index 218b8db0..65f603e7 100644
--- a/plugins/tasklist/tasklist.js
+++ b/plugins/tasklist/tasklist.js
@@ -1,2908 +1,2912 @@
 /**
  * Client scripts for the Tasklist plugin
  *
  * @author Thomas Bruederli <bruederli@kolabsys.com>
  *
  * @licstart  The following is the entire license notice for the
  * JavaScript code in this file.
  *
  * Copyright (C) 2012, Kolab Systems AG <contact@kolabsys.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU Affero General Public License for more details.
  *
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  *
  * @licend  The above is the entire license notice
  * for the JavaScript code in this file.
  */
  
 function rcube_tasklist_ui(settings)
 {
     // extend base class
     rcube_libcalendaring.call(this, settings);
 
     /*  constants  */
     var FILTER_MASK_ALL = 0;
     var FILTER_MASK_TODAY = 1;
     var FILTER_MASK_TOMORROW = 2;
     var FILTER_MASK_WEEK = 4;
     var FILTER_MASK_LATER = 8;
     var FILTER_MASK_NODATE = 16;
     var FILTER_MASK_OVERDUE = 32;
     var FILTER_MASK_FLAGGED = 64;
     var FILTER_MASK_COMPLETE = 128;
     var FILTER_MASK_ASSIGNED = 256;
     var FILTER_MASK_MYTASKS = 512;
 
     var filter_masks = {
         all:      FILTER_MASK_ALL,
         today:    FILTER_MASK_TODAY,
         tomorrow: FILTER_MASK_TOMORROW,
         week:     FILTER_MASK_WEEK,
         later:    FILTER_MASK_LATER,
         nodate:   FILTER_MASK_NODATE,
         overdue:  FILTER_MASK_OVERDUE,
         flagged:  FILTER_MASK_FLAGGED,
         complete: FILTER_MASK_COMPLETE,
         assigned: FILTER_MASK_ASSIGNED,
         mytasks:  FILTER_MASK_MYTASKS
     };
 
     /*  private vars  */
     var tagsfilter = [];
     var filtermask = FILTER_MASK_ALL;
     var loadstate = { filter:-1, lists:'', search:null };
     var idcount = 0;
     var focusview;
     var saving_lock;
     var ui_loading;
     var taskcounts = {};
     var listindex = [];
     var listdata = {};
     var tags = [];
     var draghelper;
     var search_request;
     var search_query;
     var completeness_slider;
     var task_draghelper;
     var tag_draghelper;
     var task_drag_active = false;
     var list_scroll_top = 0;
     var scroll_delay = 400;
     var scroll_step = 5;
     var scroll_speed = 20;
     var scroll_sensitivity = 40;
     var scroll_timer;
     var tasklists_widget;
     var focused_task;
     var focused_subclass;
     var task_attendees = [];
     var attendees_list;
     var me = this;
 
     // general datepicker settings
     var datepicker_settings = {
       // translate from PHP format to datepicker format
       dateFormat: settings['date_format'].replace(/M/g, 'm').replace(/mmmmm/, 'MM').replace(/mmm/, 'M').replace(/dddd/, 'DD').replace(/ddd/, 'D').replace(/yy/g, 'y'),
       firstDay : settings['first_day'],
 //      dayNamesMin: settings['days_short'],
 //      monthNames: settings['months'],
 //      monthNamesShort: settings['months'],
       changeMonth: false,
       showOtherMonths: true,
       selectOtherMonths: true
     };
     var extended_datepicker_settings;
 
     /*  public members  */
     this.tasklists = rcmail.env.tasklists;
     this.selected_task;
     this.selected_list;
 
     /*  public methods  */
     this.init = init;
     this.edit_task = task_edit_dialog;
     this.delete_task = delete_task;
     this.add_childtask = add_childtask;
     this.quicksearch = quicksearch;
     this.reset_search = reset_search;
     this.expand_collapse = expand_collapse;
     this.list_delete = list_delete;
     this.list_remove = list_remove;
     this.list_edit_dialog = list_edit_dialog;
     this.unlock_saving = unlock_saving;
 
     /* imports */
     var Q = this.quote_html;
     var text2html = this.text2html;
     var event_date_text = this.event_date_text;
     var parse_datetime = this.parse_datetime;
     var date2unixtime = this.date2unixtime;
     var fromunixtime = this.fromunixtime;
 
     /**
      * initialize the tasks UI
      */
     function init()
     {
         // initialize task list selectors
         for (var id in me.tasklists) {
             if (me.tasklists[id].editable && (!me.selected_list || me.tasklists[id].default || (me.tasklists[id].active && !me.tasklists[me.selected_list].active))) {
                 me.selected_list = id;
             }
         }
 
         // initialize treelist widget that controls the tasklists list
         var widget_class = window.kolab_folderlist || rcube_treelist_widget;
         tasklists_widget = new widget_class(rcmail.gui_objects.tasklistslist, {
             id_prefix: 'rcmlitasklist',
             selectable: true,
             save_state: true,
             keyboard: false,
             searchbox: '#tasklistsearch',
             search_action: 'tasks/tasklist',
             search_sources: [ 'folders', 'users' ],
             search_title: rcmail.gettext('listsearchresults','tasklist')
         });
         tasklists_widget.addEventListener('select', function(node) {
             var id = $(this).data('id');
             rcmail.enable_command('list-edit', 'list-delete', 'list-import', me.tasklists[node.id].editable);
             rcmail.enable_command('list-remove', me.tasklists[node.id] && me.tasklists[node.id].removable);
             me.selected_list = node.id;
         });
         tasklists_widget.addEventListener('subscribe', function(p) {
             var list;
             if ((list = me.tasklists[p.id])) {
                 list.subscribed = p.subscribed || false;
                 rcmail.http_post('tasklist', { action:'subscribe', l:{ id:p.id, active:list.active?1:0, permanent:list.subscribed?1:0 } });
             }
         });
         tasklists_widget.addEventListener('remove', function(p) {
             if (me.tasklists[p.id] && me.tasklists[p.id].removable) {
                 list_remove(p.id);
             }
         });
         tasklists_widget.addEventListener('insert-item', function(p) {
             var list = p.data;
             if (list && list.id && !list.virtual) {
                 me.tasklists[list.id] = list;
                 var prop = { id:p.id, active:list.active?1:0 };
                 if (list.subscribed) prop.permanent = 1;
                 rcmail.http_post('tasklist', { action:'subscribe', l:prop });
                 list_tasks();
                 $(p.item).data('type', 'tasklist');
             }
         });
         tasklists_widget.addEventListener('search-complete', function(data) {
             if (data.length)
                 rcmail.display_message(rcmail.gettext('nrtasklistsfound','tasklist').replace('$nr', data.length), 'voice');
             else
                 rcmail.display_message(rcmail.gettext('notasklistsfound','tasklist'), 'info');
         });
 
         // init (delegate) event handler on tasklist checkboxes
         tasklists_widget.container.on('click', 'input[type=checkbox]', function(e) {
             var list, id = this.value;
             if ((list = me.tasklists[id])) {
                 list.active = this.checked;
                 fetch_counts();
                 if (!this.checked) remove_tasks(id);
                 else               list_tasks(null);
                 rcmail.http_post('tasklist', { action:'subscribe', l:{ id:id, active:list.active?1:0 } });
 
                 // disable focusview
                 if (!this.checked && focusview == id) {
                     set_focusview(null);
                 }
 
                 // adjust checked state of original list item
                 if (tasklists_widget.is_search()) {
                   tasklists_widget.container.find('input[value="'+id+'"]').prop('checked', this.checked);
                 }
             }
             e.stopPropagation();
         })
         .on('keypress', 'input[type=checkbox]', function(e) {
             // select tasklist on <Enter>
             if (e.keyCode == 13) {
                 tasklists_widget.select(this.value);
                 return rcube_event.cancel(e);
             }
         })
         .find('li:not(.virtual)').data('type', 'tasklist');
 
         // handler for clicks on quickview buttons
         tasklists_widget.container.on('click', '.quickview', function(e){
             var id = $(this).closest('li').attr('id').replace(/^rcmlitasklist/, '');
 
             if (tasklists_widget.is_search())
               id = id.replace(/--xsR$/, '');
 
             set_focusview(focusview == id ? null : id);
             e.stopPropagation();
             return false;
         });
 
         // register dbl-click handler to open calendar edit dialog
         tasklists_widget.container.on('dblclick', ':not(.virtual) > .tasklist', function(e){
             var id = $(this).closest('li').attr('id').replace(/^rcmlitasklist/, '');
 
             if (tasklists_widget.is_search())
               id = id.replace(/--xsR$/, '');
 
             list_edit_dialog(id);
         });
 
         if (me.selected_list) {
             rcmail.enable_command('addtask', true);
             tasklists_widget.select(me.selected_list);
         }
 
         // register server callbacks
         rcmail.addEventListener('plugin.data_ready', data_ready);
         rcmail.addEventListener('plugin.update_task', update_taskitem);
         rcmail.addEventListener('plugin.refresh_tasks', function(p) { update_taskitem(p, true); });
         rcmail.addEventListener('plugin.update_counts', update_counts);
         rcmail.addEventListener('plugin.insert_tasklist', insert_list);
         rcmail.addEventListener('plugin.update_tasklist', update_list);
         rcmail.addEventListener('plugin.destroy_tasklist', destroy_list);
         rcmail.addEventListener('plugin.unlock_saving', unlock_saving);
         rcmail.addEventListener('requestrefresh', before_refresh);
         rcmail.addEventListener('plugin.reload_data', function(){
             list_tasks(null, true);
             setTimeout(fetch_counts, 200);
         });
 
         rcmail.register_command('list-sort', list_set_sort, true);
         rcmail.register_command('list-order', list_set_order, (settings.sort_col || 'auto') != 'auto');
 
         $('#taskviewsortmenu .by-' + (settings.sort_col || 'auto')).attr('aria-checked', 'true').addClass('selected');
         $('#taskviewsortmenu .sortorder.' + (settings.sort_order || 'asc')).attr('aria-checked', 'true').addClass('selected');
 
 
         // start loading tasks
         fetch_counts();
         list_tasks();
 
         // register event handlers for UI elements
         $('#taskselector a').click(function(e) {
             if (!$(this).parent().hasClass('inactive')) {
                 var selector = this.href.replace(/^.*#/, ''),
                     mask = filter_masks[selector],
                     shift = e.shiftKey || e.ctrlKey || e.metaKey;
 
                 if (!shift)
                     filtermask = mask;  // reset selection on regular clicks
                 else if (filtermask & mask)
                     filtermask -= mask;
                 else
                     filtermask |= mask;
 
                 list_tasks();
             }
             return false;
         });
 
         // quick-add a task
         $(rcmail.gui_objects.quickaddform).submit(function(e){
             var tasktext = this.elements.text.value,
                 rec = { id:-(++idcount), title:tasktext, readonly:true, mask:0, complete:0 };
 
             if (tasktext && tasktext.length) {
                 save_task({ tempid:rec.id, raw:tasktext, list:me.selected_list }, 'new');
                 render_task(rec);
 
                 $('#listmessagebox').hide();
             }
 
             // clear form
             this.reset();
             return false;
         }).find('input[type=text]').placeholder(rcmail.gettext('createnewtask','tasklist'));
 
         // click-handler on tags list
         $(rcmail.gui_objects.tagslist).on('click', 'li', function(e){
             var item = e.target.nodeName == 'LI' ? $(e.target) : $(e.target).closest('li'),
                 tag = item.data('value');
 
             if (!tag)
                 return false;
 
             // reset selection on regular clicks
             var index = $.inArray(tag, tagsfilter);
             var shift = e.shiftKey || e.ctrlKey || e.metaKey;
 
             if (!shift) {
                 if (tagsfilter.length > 1)
                     index = -1;
 
                 $('li', rcmail.gui_objects.tagslist).removeClass('selected').attr('aria-checked', 'false');
                 tagsfilter = [];
             }
 
             // add tag to filter
             if (index < 0) {
                 item.addClass('selected').attr('aria-checked', 'true');
                 tagsfilter.push(tag);
             }
             else if (shift) {
                 item.removeClass('selected').attr('aria-checked', 'false');
                 var a = tagsfilter.slice(0,index);
                 tagsfilter = a.concat(tagsfilter.slice(index+1));
             }
 
             list_tasks();
 
             // clear text selection in IE after shift+click
             if (shift && document.selection)
               document.selection.empty();
 
             e.preventDefault();
             return false;
         })
         .on('keypress', 'li', function(e) {
             if (e.keyCode == 13) {
                 $(this).trigger('click', { pointerType:'keyboard' });
             }
         })
         .mousedown(function(e){
             // disable content selection with the mouse
             e.preventDefault();
             return false;
         });
 
         // click-handler on task list items (delegate)
         $(rcmail.gui_objects.resultlist).on('click', function(e){
             var item = $(e.target);
             var className = e.target.className;
 
             if (item.hasClass('childtoggle')) {
                 item = item.parent().find('.taskhead');
                 className = 'childtoggle';
             }
             else if (!item.hasClass('taskhead'))
                 item = item.closest('div.taskhead');
 
             // ignore
             if (!item.length)
                 return false;
 
             var id = item.data('id'),
                 li = item.parent(),
                 rec = listdata[id];
 
             switch (className) {
                 case 'childtoggle':
                     rec.collapsed = !rec.collapsed;
                     li.children('.childtasks:first').toggle().attr('aria-hidden', rec.collapsed ? 'true' : 'false');
                     $(e.target).toggleClass('collapsed').html(rec.collapsed ? '&#9654;' : '&#9660;');
                     rcmail.http_post('tasks/task', { action:'collapse', t:{ id:rec.id, list:rec.list }, collapsed:rec.collapsed?1:0 });
                     if (e.shiftKey)  // expand/collapse all childs
                         li.children('.childtasks:first .childtoggle.'+(rec.collapsed?'expanded':'collapsed')).click();
                     break;
 
                 case 'complete':
                     if (rcmail.busy)
                         return false;
 
                     save_task_confirm(rec, 'edit', { _status_before:rec.status + '', status:e.target.checked ? 'COMPLETED' : (rec.complete > 0 ? 'IN-PROCESS' : 'NEEDS-ACTION') });
                     item.toggleClass('complete');
                     return true;
 
                 case 'flagged':
                     if (rcmail.busy)
                         return false;
 
                     rec.flagged = rec.flagged ? 0 : 1;
                     item.toggleClass('flagged').find('.flagged:first').attr('aria-checked', (rec.flagged ? 'true' : 'false'));
                     save_task(rec, 'edit');
                     break;
 
                 case 'date':
                     if (rcmail.busy)
                         return false;
 
                     var link = $(e.target).html(''),
                         input = $('<input type="text" size="10" />').appendTo(link).val(rec.date || '')
 
                     input.datepicker($.extend({
                         onClose: function(dateText, inst) {
                             if (dateText != (rec.date || '')) {
                                 save_task_confirm(rec, 'edit', { date:dateText });
                             }
                             input.datepicker('destroy').remove();
                             link.html(dateText || rcmail.gettext('nodate','tasklist'));
                         }
                       }, extended_datepicker_settings)
                     )
                     .datepicker('setDate', rec.date)
                     .datepicker('show');
                     break;
 
                 case 'delete':
                     delete_task(id);
                     break;
 
                 case 'actions':
                     var pos, ref = $(e.target),
                         menu = $('#taskitemmenu');
 
                     if (menu.is(':visible') && menu.data('refid') == id) {
                         rcmail.command('menu-close', 'taskitemmenu');
                     }
                     else {
                         rcmail.command('menu-open', { menu: 'taskitemmenu', show: true }, e.target, e);
                         menu.data('refid', id);
                         me.selected_task = rec;
                     }
                     e.bubble = false;
                     break;
 
                 case 'extlink':
                     return true;
 
                 default:
                     if (e.target.nodeName != 'INPUT')
                         task_show_dialog(id);
                     break;
             }
 
             return false;
         })
         .on('dblclick', '.taskhead, .childtoggle', function(e){
             var id, rec, item = $(e.target);
             if (!item.hasClass('taskhead'))
                 item = item.closest('div.taskhead');
 
             if (!rcmail.busy && item.length && (id = item.data('id')) && (rec = listdata[id])) {
                 var list = rec.list && me.tasklists[rec.list] ? me.tasklists[rec.list] : {};
                 if (rec.readonly || !list.editable)
                     task_show_dialog(id);
                 else
                     task_edit_dialog(id, 'edit');
                 clearSelection();
             }
         })
         .on('keydown', '.taskhead', function(e) {
             if (e.target.nodeName == 'INPUT' && e.target.type == 'text')
                 return true;
 
             var inc = 1;
             switch (e.keyCode) {
                 case 13:  // Enter
                     $(e.target).trigger('click', { pointerType:'keyboard' });
                     return rcube_event.cancel(e);
 
                 case 38: // Up arrow key
                     inc = -1;
                 case 40: // Down arrow key
                     if ($(e.target).hasClass('actions')) {
                         // unfold actions menu
                         $(e.target).trigger('click', { pointerType:'keyboard' });
                         return rcube_event.cancel(e);
                     }
 
                     // focus next/prev task item
                     var x = 0, target = this, items = $(rcmail.gui_objects.resultlist).find('.taskhead:visible');
                     items.each(function(i, item) {
                         if (item === target) {
                             x = i;
                             return false;
                         }
                     });
                     items.get(x + inc).focus();
                     return rcube_event.cancel(e);
 
                 case 37: // Left arrow key
                 case 39: // Right arrow key
                     $(this).parent().children('.childtoggle:visible').first().trigger('click', { pointerType:'keyboard' });
                     break;
             }
         })
         .on('focusin', '.taskhead', function(e){
             if (rcube_event.is_keyboard(e)) {
                 var item = $(e.target);
                 if (!item.hasClass('taskhead'))
                     item = item.closest('div.taskhead');
 
                 var id = item.data('id');
                 if (id && listdata[id]) {
                     focused_task = id;
                     focused_subclass = item.get(0) !== e.target ? e.target.className : null;
                 }
             }
         })
         .on('focusout', '.taskhead', function(e){
             var item = $(e.target);
             if (focused_task && item.data('id') == focused_task) {
                 focused_task = focused_subclass = null;
             }
         });
 
         // init RSVP widget
         $('#task-rsvp input.button').click(function(e) {
             var response = $(this).attr('rel');
 
             if (me.selected_task && me.selected_task.attendees && response) {
                 // update attendee status
                 for (var data, i=0; i < me.selected_task.attendees.length; i++) {
                     data = me.selected_task.attendees[i];
                     if (settings.identity.emails.indexOf(';'+String(data.email).toLowerCase()) >= 0) {
                         data.status = response.toUpperCase();
                         delete data.rsvp;  // unset RSVP flag
                     }
                 }
 
                 // submit status change to server
                 saving_lock = rcmail.set_busy(true, 'tasklist.savingdata');
                 rcmail.http_post('tasks/task', {
                     action: 'rsvp',
                     t: me.selected_task,
                     filter: filtermask,
                     status: response,
                     noreply: $('#noreply-task-rsvp:checked').length ? 1 : 0,
                     comment: $('#reply-comment-task-rsvp').val()
                 });
 
                 task_show_dialog(me.selected_task.id);
             }
         });
 
         // handle global document clicks: close popup menus
         $(document.body).click(clear_popups);
 
         // extended datepicker settings
         var extended_datepicker_settings = $.extend({
             showButtonPanel: true,
             beforeShow: function(input, inst) {
                 setTimeout(function(){
                     $(input).datepicker('widget').find('button.ui-datepicker-close')
                         .html(rcmail.gettext('nodate','tasklist'))
                         .attr('onclick', '')
                         .unbind('click')
                         .bind('click', function(e){
                             $(input).datepicker('setDate', null).datepicker('hide');
                         });
                 }, 1);
             }
         }, datepicker_settings);
     }
 
     /**
      * initialize task edit form elements
      */
     function init_taskedit()
     {
         $('#taskedit').tabs();
 
         var completeness_slider_change = function(e, ui){
           var v = completeness_slider.slider('value');
           if (v >= 98) v = 100;
           if (v <= 2)  v = 0;
           $('#taskedit-completeness').val(v);
         };
         completeness_slider = $('#taskedit-completeness-slider').slider({
             range: 'min',
             animate: 'fast',
             slide: completeness_slider_change,
             change: completeness_slider_change
         });
         $('#taskedit-completeness').change(function(e){
             completeness_slider.slider('value', parseInt(this.value))
         });
 
         // register events on alarms and recurrence fields
         me.init_alarms_edit('#taskedit-alarms');
         me.init_recurrence_edit('#eventedit');
 
         $('#taskedit-date, #taskedit-startdate').datepicker(datepicker_settings);
 
         $('a.edit-nodate').click(function(){
             var sel = $(this).attr('rel');
             if (sel) $(sel).val('');
             return false;
         });
 
       // init attendees autocompletion
       var ac_props;
       // parallel autocompletion
       if (rcmail.env.autocomplete_threads > 0) {
         ac_props = {
           threads: rcmail.env.autocomplete_threads,
           sources: rcmail.env.autocomplete_sources
         };
       }
       rcmail.init_address_input_events($('#edit-attendee-name'), ac_props);
       rcmail.addEventListener('autocomplete_insert', function(e) {
           var success = false;
           if (e.field.name == 'participant') {
               success = add_attendees(e.insert, { role:'REQ-PARTICIPANT', status:'NEEDS-ACTION', cutype:(e.data && e.data.type == 'group' ? 'GROUP' : 'INDIVIDUAL') });
           }
           if (e.field && success) {
               e.field.value = '';
           }
       });
 
       $('#edit-attendee-add').click(function() {
           var input = $('#edit-attendee-name');
           rcmail.ksearch_blur();
           if (add_attendees(input.val(), { role:'REQ-PARTICIPANT', status:'NEEDS-ACTION', cutype:'INDIVIDUAL' })) {
               input.val('');
           }
       });
 
       // handle change of "send invitations" checkbox
       $('#edit-attendees-invite').change(function() {
         $('#edit-attendees-donotify,input.edit-attendee-reply').prop('checked', this.checked);
         // hide/show comment field
         $('#taskeditform .attendees-commentbox')[this.checked ? 'show' : 'hide']();
       });
 
       // delegate change task to "send invitations" checkbox
       $('#edit-attendees-donotify').change(function() {
         $('#edit-attendees-invite').click();
         return false;
       });
     }
 
     /**
      * Request counts from the server
      */
     function fetch_counts()
     {
         var active = active_lists();
         if (active.length)
             rcmail.http_request('counts', { lists:active.join(',') });
         else
             update_counts({});
     }
 
     /**
      * List tasks matching the given selector
      */
     function list_tasks(sel, force)
     {
         if (rcmail.busy)
             return;
 
         if (sel && filter_masks[sel] !== undefined) {
             filtermask = filter_masks[sel];
         }
 
         var active = active_lists(),
             basefilter = filtermask & FILTER_MASK_COMPLETE ? FILTER_MASK_COMPLETE : FILTER_MASK_ALL,
             reload = force || active.join(',') != loadstate.lists || basefilter != loadstate.filter || loadstate.search != search_query;
 
         if (active.length && reload) {
             ui_loading = rcmail.set_busy(true, 'loading');
             rcmail.http_request('fetch', { filter:basefilter, lists:active.join(','), q:search_query }, true);
         }
         else if (reload)
             data_ready({ data:[], lists:'', filter:basefilter, search:search_query });
         else
             render_tasklist();
 
         $('#taskselector li.selected').removeClass('selected').attr('aria-checked', 'false');
 
         // select all active selectors
         if (filtermask > 0) {
             $.each(filter_masks, function(sel, mask) {
                 if (filtermask & mask)
                     $('#taskselector li.'+sel).addClass('selected').attr('aria-checked', 'true');
             });
         }
         else
             $('#taskselector li.all').addClass('selected').attr('aria-checked', 'true');
     }
 
     /**
      * Remove all tasks of the given list from the UI
      */
     function remove_tasks(list_id)
     {
         // remove all tasks of the given list from index
         var newindex = $.grep(listindex, function(id, i){
             return listdata[id] && listdata[id].list != list_id;
         });
 
         listindex = newindex;
         render_tasklist();
 
         // avoid reloading
         me.tasklists[list_id].active = false;
         loadstate.lists = active_lists();
     }
 
     /**
      * Modify query parameters for refresh requests
      */
     function before_refresh(query)
     {
         query.filter = filtermask == FILTER_MASK_COMPLETE ? FILTER_MASK_COMPLETE : FILTER_MASK_ALL;
         query.lists = active_lists().join(',');
         if (search_query)
             query.q = search_query;
 
         return query;
     }
 
     /**
      * Callback if task data from server is ready
      */
     function data_ready(response)
     {
         listdata = {};
         listindex = [];
         loadstate.lists = response.lists;
         loadstate.filter = response.filter;
         loadstate.search = response.search;
 
         for (var id, i=0; i < response.data.length; i++) {
             id = response.data[i].id;
             listindex.push(id);
             listdata[id] = response.data[i];
             listdata[id].children = [];
             // register a forward-pointer to child tasks
             if (listdata[id].parent_id && listdata[listdata[id].parent_id])
                 listdata[listdata[id].parent_id].children.push(id);
         }
 
         // sort index before rendering
         listindex.sort(function(a, b) { return task_cmp(listdata[a], listdata[b]); });
 
         append_tags(response.tags || []);
         render_tasklist();
 
         rcmail.set_busy(false, 'loading', ui_loading);
     }
 
     /**
      *
      */
     function render_tasklist()
     {
         // clear display
         var id, rec,
             count = 0,
             cache = {},
             activetags = {},
             msgbox = $('#listmessagebox').hide(),
             list = $(rcmail.gui_objects.resultlist).html('');
 
         for (var i=0; i < listindex.length; i++) {
             id = listindex[i];
             rec = listdata[id];
             if (match_filter(rec, cache)) {
                 render_task(rec);
                 count++;
 
                 // keep a list of tags from all visible tasks
                 for (var t, j=0; rec.tags && j < rec.tags.length; j++) {
                     t = rec.tags[j];
                     if (typeof activetags[t] == 'undefined')
                         activetags[t] = 0;
                     activetags[t]++;
                 }
             }
         }
 
         fix_tree_toggles();
         update_tagcloud(activetags);
 
         if (!count) {
             msgbox.html(rcmail.gettext('notasksfound','tasklist')).show();
             rcmail.display_message(rcmail.gettext('notasksfound','tasklist'), 'voice');
         }
     }
 
     /**
      * Show/hide child toggle buttons on all visible task items
      */
     function fix_tree_toggles()
     {
         $('.taskitem', rcmail.gui_objects.resultlist).each(function(i,elem){
             var li = $(elem),
                 rec = listdata[li.attr('rel')],
                 childs = $('.childtasks li', li);
 
             $('.childtoggle', li)[(childs.length ? 'show' : 'hide')]();
         })
     }
 
     /**
      * Expand/collapse all task items with childs
      */
     function expand_collapse(expand)
     {
         var collapsed = !expand;
 
         $('.taskitem .childtasks')[(collapsed ? 'hide' : 'show')]();
         $('.taskitem .childtoggle')
             .removeClass(collapsed ? 'expanded' : 'collapsed')
             .addClass(collapsed ? 'collapsed' : 'expanded')
             .html(collapsed ? '&#9654;' : '&#9660;');
 
         // store new toggle collapse states
         var ids = [];
         for (var id in listdata) {
             if (listdata[id].children && listdata[id].children.length)
                 ids.push(id);
         }
         if (ids.length) {
             rcmail.http_post('tasks/task', { action:'collapse', t:{ id:ids.join(',') }, collapsed:collapsed?1:0 });
         }
     }
 
     /**
      *
      */
     function append_tags(taglist)
     {
         // find new tags
         var newtags = [];
         for (var i=0; i < taglist.length; i++) {
             if ($.inArray(taglist[i], tags) < 0)
                 newtags.push(taglist[i]);
         }
         tags = tags.concat(newtags);
 
         // append new tags to tag cloud
         $.each(newtags, function(i, tag){
             $('<li role="checkbox" aria-checked="false" tabindex="0"></li>')
                 .attr('rel', tag)
                 .data('value', tag)
                 .html(Q(tag) + '<span class="count"></span>')
                 .appendTo(rcmail.gui_objects.tagslist)
                 .draggable({
                     addClasses: false,
                     revert: 'invalid',
                     revertDuration: 300,
                     helper: tag_draggable_helper,
                     start: tag_draggable_start,
                     appendTo: 'body',
                     cursor: 'pointer'
                 });
             });
 
         // re-sort tags list
         $(rcmail.gui_objects.tagslist).children('li').sortElements(function(a,b){
             return $.text([a]).toLowerCase() > $.text([b]).toLowerCase() ? 1 : -1;
         });
     }
 
     /**
      * Display the given counts to each tag and set those inactive which don't
      * have any matching tasks in the current view.
      */
     function update_tagcloud(counts)
     {
         // compute counts first by iterating over all visible task items
         if (typeof counts == 'undefined') {
             counts = {};
             $('li.taskitem', rcmail.gui_objects.resultlist).each(function(i,li){
                 var t, id = $(li).attr('rel'),
                     rec = listdata[id];
                 for (var j=0; rec && rec.tags && j < rec.tags.length; j++) {
                     t = rec.tags[j];
                     if (typeof counts[t] == 'undefined')
                         counts[t] = 0;
                     counts[t]++;
                 }
             });
         }
 
         $(rcmail.gui_objects.tagslist).children('li').each(function(i,li){
             var elem = $(li), tag = elem.attr('rel'),
                 count = counts[tag] || 0;
 
             elem.children('.count').html(count+'');
             if (count == 0) elem.addClass('inactive');
             else            elem.removeClass('inactive');
         });
     }
 
     /*  Helper functions for drag & drop functionality of tags  */
     
     function tag_draggable_helper()
     {
         if (!tag_draghelper)
             tag_draghelper = $('<div class="tag-draghelper"></div>');
         else
             tag_draghelper.html('');
 
         $(this).clone().addClass('tag').appendTo(tag_draghelper);
         return tag_draghelper;
     }
 
     function tag_draggable_start(event, ui)
     {
         $('.taskhead').droppable({
             hoverClass: 'droptarget',
             accept: tag_droppable_accept,
             drop: tag_draggable_dropped,
             addClasses: false
         });
     }
 
     function tag_droppable_accept(draggable)
     {
         if (rcmail.busy)
             return false;
 
         var tag = draggable.data('value'),
             drop_id = $(this).data('id'),
             drop_rec = listdata[drop_id],
             list = drop_rec && me.tasklists[drop_rec.list] ? me.tasklists[drop_rec.list] : { editable:true };
 
         // target is not writeable or already has this tag assigned
         if (!drop_rec || drop_rec.readonly || !list.editable || (drop_rec.tags && $.inArray(tag, drop_rec.tags) >= 0)) {
             return false;
         }
 
         return true;
     }
 
     function tag_draggable_dropped(event, ui)
     {
         var drop_id = $(this).data('id'),
             tag = ui.draggable.data('value'),
             rec = listdata[drop_id];
 
         if (rec && rec.id) {
             if (!rec.tags) rec.tags = [];
             rec.tags.push(tag);
             save_task(rec, 'edit');
         }
     }
 
     /**
      *
      */
     function update_counts(counts)
     {
         // got new data
         if (counts)
             taskcounts = counts;
 
         // iterate over all selector links and update counts
         $('#taskselector a').each(function(i, elem){
             var link = $(elem),
                 f = link.parent().attr('class').replace(/\s\w+/, '');
             if (f != 'all')
                 link.children('span').html(taskcounts[f] || '')[(taskcounts[f] ? 'show' : 'hide')]();
         });
 
         // spacial case: overdue
         $('#taskselector li.overdue')[(taskcounts.overdue ? 'removeClass' : 'addClass')]('inactive');
     }
 
     /**
      * Callback from server to update a single task item
      */
     function update_taskitem(rec, filter)
     {
         // handle a list of task records
         if ($.isArray(rec)) {
             $.each(rec, function(i,r){ update_taskitem(r, filter); });
             return;
         }
 
         var id = rec.id,
             oldid = rec.tempid || id,
             oldrec = listdata[oldid],
             oldindex = $.inArray(oldid, listindex),
             oldparent = oldrec ? (oldrec._old_parent_id || oldrec.parent_id) : null,
             list = me.tasklists[rec.list];
 
         if (oldindex >= 0)
             listindex[oldindex] = id;
         else
             listindex.push(id);
 
         listdata[id] = rec;
 
         // remove child-pointer from old parent
         if (oldparent && listdata[oldparent] && oldparent != rec.parent_id) {
             var oldchilds = listdata[oldparent].children,
                 i = $.inArray(oldid, oldchilds);
             if (i >= 0) {
                 listdata[oldparent].children = oldchilds.slice(0,i).concat(oldchilds.slice(i+1));
             }
         }
 
         // register a forward-pointer to child tasks
         if (rec.parent_id && listdata[rec.parent_id] && listdata[rec.parent_id].children && $.inArray(id, listdata[rec.parent_id].children) < 0)
             listdata[rec.parent_id].children.push(id);
 
         // restore pointers to my children
         if (!listdata[id].children) {
             listdata[id].children = [];
             for (var pid in listdata) {
                 if (listdata[pid].parent_id == id)
                     listdata[id].children.push(pid);
             }
         }
 
         // copy _depth property from old rec or derive from parent
         if (rec.parent_id && listdata[rec.parent_id]) {
             rec._depth = (listdata[rec.parent_id]._depth || 0) + 1;
         }
         else if (oldrec) {
             rec._depth = oldrec._depth || 0;
         }
 
         if (list.active || rec.tempid) {
             if (!filter || match_filter(rec, {}))
                 render_task(rec, oldid);
         }
         else {
             $('li[rel="'+id+'"]', rcmail.gui_objects.resultlist).remove();
         }
 
         append_tags(rec.tags || []);
         update_tagcloud();
         fix_tree_toggles();
 
         // refresh currently displayed task details dialog
         if ($('#taskshow').is(':visible') && me.selected_task && me.selected_task.id == rec.id) {
             task_show_dialog(rec.id);
         }
     }
 
     /**
      * Submit the given (changed) task record to the server
      */
     function save_task(rec, action)
     {
         // show confirmation dialog when status of an assigned task has changed
         if (rec._status_before !== undefined && is_attendee(rec))
             return save_task_confirm(rec, action);
 
         if (!rcmail.busy) {
             saving_lock = rcmail.set_busy(true, 'tasklist.savingdata');
             rcmail.http_post('tasks/task', { action:action, t:rec, filter:filtermask });
             $('button.ui-button:ui-button').button('option', 'disabled', rcmail.busy);
             return true;
         }
         
         return false;
     }
 
     /**
      * Display confirm dialog when modifying/deleting a task record
      */
     var save_task_confirm = function(rec, action, updates)
     {
         var data = $.extend({}, rec, updates || {}),
           notify = false, partstat = false, html = '',
           do_confirm = settings.itip_notify & 2;
 
         // task has attendees, ask whether to notify them
         if (has_attendees(rec) && is_organizer(rec)) {
             notify = true;
             if (do_confirm) {
                 html = rcmail.gettext('changeconfirmnotifications', 'tasklist');
             }
             else {
                 data._notify = settings.itip_notify;
             }
         }
         // ask whether to change my partstat and notify organizer
         else if (data._status_before !== undefined && data.status && data._status_before != data.status && is_attendee(rec)) {
           partstat = true;
           if (do_confirm) {
               html = rcmail.gettext('partstatupdatenotification', 'tasklist');
           }
           else if (settings.itip_notify & 1) {
               data._reportpartstat = data.status == 'CANCELLED' ? 'DECLINED' : data.status;
           }
         }
 
         // remove to avoid endless recursion
         delete data._status_before;
 
         // show dialog
         if (html) {
             var $dialog = $('<div>').html(html);
 
             var buttons = [];
             buttons.push({
                 text: rcmail.gettext('saveandnotify', 'tasklist'),
                 click: function() {
                     if (notify)   data._notify = 1;
                     if (partstat) data._reportpartstat = data.status == 'CANCELLED' ? 'DECLINED' : data.status;
                     save_task(data, action);
                     $(this).dialog('close');
                 }
             });
             buttons.push({
                 text: rcmail.gettext('save', 'tasklist'),
                 click: function() {
                     save_task(data, action);
                     $(this).dialog('close');
                 }
             });
             buttons.push({
                 text: rcmail.gettext('cancel', 'tasklist'),
                 click: function() {
                     $(this).dialog('close');
                     if (updates)
                       render_task(rec, rec.id);  // restore previous state
                 }
             });
 
             $dialog.dialog({
                 modal: true,
                 width: 460,
                 closeOnEscapeType: false,
                 dialogClass: 'warning no-close',
                 title: rcmail.gettext('changetaskconfirm', 'tasklist'),
                 buttons: buttons,
                 open: function() {
                     setTimeout(function(){
                       $dialog.parent().find('.ui-button:not(.ui-dialog-titlebar-close)').first().focus();
                     }, 5);
                 },
                 close: function(){
                     $dialog.dialog('destroy').remove();
                 }
             }).addClass('task-update-confirm').show();
 
             return true;
         }
 
         // do update
         return save_task(data, action);
     }
 
     /**
      * Remove saving lock and free the UI for new input
      */
     function unlock_saving()
     {
         if (saving_lock) {
             rcmail.set_busy(false, null, saving_lock);
             $('button.ui-button:ui-button').button('option', 'disabled', false);
         }
     }
 
     /**
      * Render the given task into the tasks list
      */
     function render_task(rec, replace)
     {
         var tags_html = '';
         for (var j=0; rec.tags && j < rec.tags.length; j++)
             tags_html += '<span class="tag">' + Q(rec.tags[j]) + '</span>';
 
         var label_id = rcmail.html_identifier(rec.id) + '-title';
         var div = $('<div>').addClass('taskhead').html(
             '<div class="progressbar"><div class="progressvalue" style="width:' + (rec.complete * 100) + '%"></div></div>' +
             '<input type="checkbox" name="completed[]" value="1" class="complete" aria-label="' + rcmail.gettext('complete','tasklist') + '" ' + (is_complete(rec) ? 'checked="checked" ' : '') + '/>' + 
             '<span class="flagged" role="checkbox" tabindex="0" aria-checked="' + (rec.flagged ? 'true' : 'false') + '" aria-label="' + rcmail.gettext('flagged','tasklist') + '"></span>' +
             '<span class="title" id="' + label_id + '">' + text2html(Q(rec.title)) + '</span>' +
             '<span class="tags">' + tags_html + '</span>' +
             '<span class="date">' + Q(rec.date || rcmail.gettext('nodate','tasklist')) + '</span>' +
             '<a href="#" class="actions" aria-haspopup="true" aria-expanded="false">' + rcmail.gettext('taskactions','tasklist') + '</a>'
             )
             .attr('tabindex', '0')
             .attr('aria-labelledby', label_id)
             .data('id', rec.id)
             .draggable({
                 revert: 'invalid',
                 addClasses: false,
                 cursorAt: { left:-10, top:12 },
                 helper: task_draggable_helper,
                 appendTo: 'body',
                 start: task_draggable_start,
                 stop: task_draggable_stop,
                 drag: task_draggable_move,
                 revertDuration: 300
             });
 
         if (is_complete(rec))
             div.addClass('complete');
         if (rec.flagged)
             div.addClass('flagged');
         if (!rec.date)
             div.addClass('nodate');
         if ((rec.mask & FILTER_MASK_OVERDUE))
             div.addClass('overdue');
 
         var li, inplace = false, parent = rec.parent_id ? $('li[rel="'+rec.parent_id+'"] > ul.childtasks', rcmail.gui_objects.resultlist) : null;
         if (replace && (li = $('li[rel="'+replace+'"]', rcmail.gui_objects.resultlist)) && li.length) {
             li.children('div.taskhead').first().replaceWith(div);
             li.attr('rel', rec.id);
             inplace = true;
         }
         else {
             li = $('<li role="treeitem">')
                 .attr('rel', rec.id)
                 .addClass('taskitem')
                 .append((rec.collapsed ? '<span class="childtoggle collapsed">&#9654;' : '<span class="childtoggle expanded">&#9660;') + '</span>')
                 .append(div)
                 .append('<ul class="childtasks" role="group" style="' + (rec.collapsed ? 'display:none' : '') + '" aria-hidden="' + (rec.collapsed ? 'true' : 'false') +'"></ul>');
 
             if (!parent || !parent.length)
                 li.appendTo(rcmail.gui_objects.resultlist);
         }
 
         if (!inplace && parent && parent.length)
             li.appendTo(parent);
 
         if (replace) {
             resort_task(rec, li, true);
             // TODO: remove the item after a while if it doesn't match the current filter anymore
         }
 
         // re-set focus to taskhead element after DOM update
         if (focused_task == rec.id) {
             focus_task(li);
         }
     }
 
     /**
      * Move the given task item to the right place in the list
      */
     function resort_task(rec, li, animated)
     {
         var dir = 0, index, slice, cmp, next_li, next_id, next_rec, insert_after, past_myself;
 
         // animated moving
         var insert_animated = function(li, before, after) {
             if (before && li.next().get(0) == before.get(0))
                 return; // nothing to do
             else if (after && li.prev().get(0) == after.get(0))
                 return; // nothing to do
             
             var speed = 300;
             li.slideUp(speed, function(){
                 if (before)     li.insertBefore(before);
                 else if (after) li.insertAfter(after);
                 li.slideDown(speed, function(){
                     if (focused_task == rec.id) {
                         focus_task(li);
                     }
                 });
             });
         }
 
         // remove from list index
         var oldlist = listindex.join('%%%');
         var oldindex = $.inArray(rec.id, listindex);
         if (oldindex >= 0) {
             slice = listindex.slice(0,oldindex);
             listindex = slice.concat(listindex.slice(oldindex+1));
         }
 
         // find the right place to insert the task item
         li.parent().children('.taskitem').each(function(i, elem){
             next_li = $(elem);
             next_id = next_li.attr('rel');
             next_rec = listdata[next_id];
 
             if (next_id == rec.id) {
                 past_myself = true;
                 return 1; // continue
             }
 
             cmp = next_rec ? task_cmp(rec, next_rec) : 0;
 
             if (cmp > 0 || (cmp == 0 && !past_myself)) {
                 insert_after = next_li;
                 return 1; // continue;
             }
             else if (next_li && cmp < 0) {
                 if (animated) insert_animated(li, next_li);
                 else          li.insertBefore(next_li);
                 index = $.inArray(next_id, listindex);
                 return false; // break
             }
         });
 
         if (insert_after) {
             if (animated) insert_animated(li, null, insert_after);
             else          li.insertAfter(insert_after);
 
             next_id = insert_after.attr('rel');
             index = $.inArray(next_id, listindex);
         }
 
         // insert into list index
         if (next_id && index >= 0) {
             slice = listindex.slice(0,index);
             slice.push(rec.id);
             listindex = slice.concat(listindex.slice(index));
         }
         else {  // restore old list index
             listindex = oldlist.split('%%%');
         }
     }
 
     /**
      * Compare function of two task records.
      * (used for sorting)
      */
     function task_cmp(a, b)
     {
         // sort by hierarchy level first
         if ((a._depth || 0) != (b._depth || 0))
             return a._depth - b._depth;
 
         var p, alt, inv = 1, c = is_complete(a) - is_complete(b), d = c;
 
         // completed tasks always move to the end
         if (c != 0)
             return c;
 
         // custom sorting
         if (settings.sort_col && settings.sort_col != 'auto') {
             alt = settings.sort_col == 'datetime' || settings.sort_col == 'startdatetime' ? 99999999999 : 0
             d = (a[settings.sort_col]||alt) - (b[settings.sort_col]||alt);
             inv = settings.sort_order == 'desc' ? -1 : 1;
         }
         // default sorting (auto)
         else {
             if (!d) d = (b._hasdate-0) - (a._hasdate-0);
             if (!d) d = (a.datetime||99999999999) - (b.datetime||99999999999);
         }
 
         // fall-back to created/changed date
         if (!d) d = (a.created||0) - (b.created||0);
         if (!d) d = (a.changed||0) - (b.changed||0);
 
         return d * inv;
     }
 
     /**
      * Set focus on the given task item after DOM update
      */
     function focus_task(li)
     {
         var selector = '.taskhead';
         if (focused_subclass)
             selector += ' .' + focused_subclass
         li.find(selector).focus();
     }
 
     /**
      * Determine whether the given task should be displayed as "complete"
      */
     function is_complete(rec)
     {
         return ((rec.complete == 1.0 && !rec.status) || rec.status === 'COMPLETED') ? 1 : 0;
     }
 
     /**
      *
      */
     function get_all_childs(id)
     {
         var cid, childs = [];
         for (var i=0; listdata[id].children && i < listdata[id].children.length; i++) {
             cid = listdata[id].children[i];
             childs.push(cid);
             childs = childs.concat(get_all_childs(cid));
         }
 
         return childs;
     }
 
 
     /*  Helper functions for drag & drop functionality  */
     
     function task_draggable_helper()
     {
         if (!task_draghelper)
             task_draghelper = $('<div class="taskitem-draghelper">&#x2714;</div>');
 
         return task_draghelper;
     }
 
     function task_draggable_start(event, ui)
     {
         var opts = {
             hoverClass: 'droptarget',
             accept: task_droppable_accept,
             drop: task_draggable_dropped,
             addClasses: false
         };
 
         $('.taskhead, #rootdroppable').droppable(opts);
         tasklists_widget.droppable(opts);
 
         $(this).parent().addClass('dragging');
         $('#rootdroppable').show();
 
         // enable auto-scrolling of list container
         var container = $(rcmail.gui_objects.resultlist);
         if (container.height() > container.parent().height()) {
             task_drag_active = true;
             list_scroll_top = container.parent().scrollTop();
         }
     }
 
     function task_draggable_move(event, ui)
     {
         var scroll = 0,
             mouse = rcube_event.get_mouse_pos(event),
             container = $(rcmail.gui_objects.resultlist);
 
         mouse.y -= container.parent().offset().top;
 
         if (mouse.y < scroll_sensitivity && list_scroll_top > 0) {
             scroll = -1; // up
         }
         else if (mouse.y > container.parent().height() - scroll_sensitivity) {
             scroll = 1; // down
         }
 
         if (task_drag_active && scroll != 0) {
             if (!scroll_timer)
                 scroll_timer = window.setTimeout(function(){ tasklist_drag_scroll(container, scroll); }, scroll_delay);
         }
         else if (scroll_timer) {
             window.clearTimeout(scroll_timer);
             scroll_timer = null;
         }
     }
 
     function task_draggable_stop(event, ui)
     {
         $(this).parent().removeClass('dragging');
         $('#rootdroppable').hide();
         task_drag_active = false;
     }
 
     function task_droppable_accept(draggable)
     {
         if (rcmail.busy)
             return false;
 
         var drag_id = draggable.data('id'),
             drop_id = $(this).data('id'),
             drag_rec = listdata[drag_id] || {},
             drop_rec = listdata[drop_id];
 
         // drop target is another list
         if (drag_rec && $(this).data('type') == 'tasklist') {
             var  drop_list = me.tasklists[drop_id],
                from_list = me.tasklists[drag_rec.list];
             return !drag_rec.parent_id && drop_id != drag_rec.list && drop_list && drop_list.editable && from_list && from_list.editable;
         }
 
         if (drop_rec && drop_rec.list != drag_rec.list)
             return false;
 
         if (drop_id == drag_rec.parent_id)
             return false;
 
         while (drop_rec && drop_rec.parent_id) {
             if (drop_rec.parent_id == drag_id)
                 return false;
             drop_rec = listdata[drop_rec.parent_id];
         }
 
         return true;
     }
 
     function task_draggable_dropped(event, ui)
     {
         var drop_id = $(this).data('id'),
             task_id = ui.draggable.data('id'),
             rec = listdata[task_id],
             parent, li;
 
         // dropped on another list -> move
         if ($(this).data('type') == 'tasklist') {
             if (rec) {
                 save_task({ id:rec.id, list:drop_id, _fromlist:rec.list }, 'move');
                 rec.list = drop_id;
             }
         }
         // dropped on a new parent task or root
         else {
             parent = drop_id ? $('li[rel="'+drop_id+'"] > ul.childtasks', rcmail.gui_objects.resultlist) : $(rcmail.gui_objects.resultlist)
 
             if (rec && parent.length) {
                 // submit changes to server
                 rec._old_parent_id = rec.parent_id;
                 rec.parent_id = drop_id || 0;
                 save_task(rec, 'edit');
 
                 li = ui.draggable.parent();
                 li.slideUp(300, function(){
                     li.appendTo(parent);
                     resort_task(rec, li);
                     li.slideDown(300);
                     fix_tree_toggles();
                 });
             }
         }
     }
 
     /**
      * Scroll list container in the given direction
      */
     function tasklist_drag_scroll(container, dir)
     {
         if (!task_drag_active)
             return;
 
         var old_top = list_scroll_top;
         container.parent().get(0).scrollTop += scroll_step * dir;
         list_scroll_top = container.parent().scrollTop();
         scroll_timer = null;
 
         if (list_scroll_top != old_top)
             scroll_timer = window.setTimeout(function(){ tasklist_drag_scroll(container, dir); }, scroll_speed);
     }
 
     // check if the task has 'real' attendees, excluding the current user
     var has_attendees = function(task)
     {
         return !!(task.attendees && task.attendees.length && (task.attendees.length > 1 || String(task.attendees[0].email).toLowerCase() != settings.identity.email));
     };
 
     // check if the current user is an attendee of this task
     var is_attendee = function(task, email, role)
     {
         var i, attendee, emails = email ? ';' + email.toLowerCase() : settings.identity.emails;
 
         for (i=0; task.attendees && i < task.attendees.length; i++) {
             attendee = task.attendees[i];
             if ((!role || attendee.role == role) && attendee.email && emails.indexOf(';'+attendee.email.toLowerCase()) >= 0) {
                 return attendee;
             }
         }
 
         return false;
     };
 
     // check if the current user is the organizer
     var is_organizer = function(task, email)
     {
         if (!email) email = task.organizer ? task.organizer.email : null;
         if (email)
             return settings.identity.emails.indexOf(';'+email) >= 0;
         return true;
     };
 
     // add the given list of participants
     var add_attendees = function(names, params)
     {
         names = explode_quoted_string(names.replace(/,\s*$/, ''), ',');
 
         // parse name/email pairs
         var i, item, email, name, success = false;
         for (i=0; i < names.length; i++) {
             email = name = '';
             item = $.trim(names[i]);
 
             if (!item.length) {
                 continue;
             }
             // address in brackets without name (do nothing)
             else if (item.match(/^<[^@]+@[^>]+>$/)) {
                 email = item.replace(/[<>]/g, '');
             }
             // address without brackets and without name (add brackets)
             else if (rcube_check_email(item)) {
                 email = item;
             }
             // address with name
             else if (item.match(/([^\s<@]+@[^>]+)>*$/)) {
                 email = RegExp.$1;
                 name = item.replace(email, '').replace(/^["\s<>]+/, '').replace(/["\s<>]+$/, '');
             }
 
             if (email) {
                 add_attendee($.extend({ email:email, name:name }, params));
                 success = true;
             }
             else {
                 alert(rcmail.gettext('noemailwarning'));
             }
         }
 
         return success;
     };
 
     // add the given attendee to the list
     var add_attendee = function(data, readonly, before)
     {
         if (!me.selected_task)
             return false;
 
         // check for dupes...
         var exists = false;
         $.each(task_attendees, function(i, v) { exists |= (v.email == data.email); });
         if (exists)
             return false;
 
         var dispname = Q(data.name || data.email);
         if (data.email)
             dispname = '<a href="mailto:' + data.email + '" title="' + Q(data.email) + '" class="mailtolink" data-cutype="' + data.cutype + '">' + dispname + '</a>';
 
         // delete icon
         var icon = rcmail.env.deleteicon ? '<img src="' + rcmail.env.deleteicon + '" alt="" />' : rcmail.gettext('delete');
         var dellink = '<a href="#delete" class="iconlink delete deletelink" title="' + Q(rcmail.gettext('delete')) + '">' + icon + '</a>';
         var tooltip = data.status || '';
 
         // send invitation checkbox
         var invbox = '<input type="checkbox" class="edit-attendee-reply" value="' + Q(data.email) +'" title="' + Q(rcmail.gettext('tasklist.sendinvitations')) + '" '
             + (!data.noreply && settings.itip_notify & 1 ? 'checked="checked" ' : '') + '/>';
 
         if (data['delegated-to'])
             tooltip = rcmail.gettext('delegatedto', 'tasklist') + data['delegated-to'];
         else if (data['delegated-from'])
             tooltip = rcmail.gettext('delegatedfrom', 'tasklist') + data['delegated-from'];
 
         // add expand button for groups
         if (data.cutype == 'GROUP') {
             dispname += ' <a href="#expand" data-email="' + Q(data.email) + '" class="iconbutton add expandlink" title="' + rcmail.gettext('expandattendeegroup','libcalendaring') + '">' +
                 rcmail.gettext('expandattendeegroup','libcalendaring') + '</a>';
         }
 
         var html = '<td class="name">' + dispname + '</td>' +
             '<td class="confirmstate"><span class="' + String(data.status).toLowerCase() + '" title="' + Q(tooltip) + '">' + Q(data.status || '') + '</span></td>' +
             (data.cutype != 'RESOURCE' ? '<td class="invite">' + (readonly || !invbox ? '' : invbox) + '</td>' : '') +
             '<td class="options">' + (readonly ? '' : dellink) + '</td>';
 
         var tr = $('<tr>')
             .addClass(String(data.role).toLowerCase())
             .html(html);
 
         if (before)
             tr.insertBefore(before)
         else
             tr.appendTo(attendees_list);
 
         tr.find('a.deletelink').click({ id:(data.email || data.name) }, function(e) { remove_attendee(this, e.data.id); return false; });
         tr.find('a.mailtolink').click(task_attendee_click);
         tr.find('a.expandlink').click(data, function(e) { me.expand_attendee_group(e, add_attendee, remove_attendee); });
         tr.find('input.edit-attendee-reply').click(function() {
             var enabled = $('#edit-attendees-invite:checked').length || $('input.edit-attendee-reply:checked').length;
             $('#taskeditform .attendees-commentbox')[enabled ? 'show' : 'hide']();
         });
 
         task_attendees.push(data);
         return true;
     };
 
     // event handler for clicks on an attendee link
     var task_attendee_click = function(e)
     {
         var mailto = this.href.substr(7);
         rcmail.command('compose', mailto);
 
         return false;
     };
 
     // remove an attendee from the list
     var remove_attendee = function(elem, id)
     {
       $(elem).closest('tr').remove();
       task_attendees = $.grep(task_attendees, function(data) { return (data.name != id && data.email != id) });
     };
 
     /**
      * Show task details in a dialog
      */
     function task_show_dialog(id)
     {
         var $dialog = $('#taskshow'), rec, list;
 
         if ($dialog.is(':ui-dialog'))
           $dialog.dialog('close');
 
         // remove status-* classes
         $dialog.removeClass(function(i, oldclass) {
             var oldies = String(oldclass).split(' ');
             return $.grep(oldies, function(cls) { return cls.indexOf('status-') === 0 }).join(' ');
         });
 
         if (!(rec = listdata[id]) || clear_popups({}))
             return;
 
         me.selected_task = rec;
         list = rec.list && me.tasklists[rec.list] ? me.tasklists[rec.list] : {};
 
         // fill dialog data
         $('#task-parent-title').html(Q(rec.parent_title || '')+' &raquo;').css('display', rec.parent_title ? 'block' : 'none');
         $('#task-title').html(text2html(Q(rec.title || '')));
         $('#task-description').html(text2html(rec.description || '', 300, 6))[(rec.description ? 'show' : 'hide')]();
         $('#task-date')[(rec.date ? 'show' : 'hide')]().children('.task-text').html(Q(rec.date || rcmail.gettext('nodate','tasklist')));
         $('#task-time').html(Q(rec.time || ''));
         $('#task-start')[(rec.startdate ? 'show' : 'hide')]().children('.task-text').html(Q(rec.startdate || ''));
         $('#task-starttime').html(Q(rec.starttime || ''));
         $('#task-alarm')[(rec.alarms_text ? 'show' : 'hide')]().children('.task-text').html(Q(rec.alarms_text));
         $('#task-completeness .task-text').html(((rec.complete || 0) * 100) + '%');
         $('#task-status')[(rec.status ? 'show' : 'hide')]().children('.task-text').html(rcmail.gettext('status-'+String(rec.status).toLowerCase(),'tasklist'));
         $('#task-list .task-text').html(Q(me.tasklists[rec.list] ? me.tasklists[rec.list].name : ''));
         $('#task-attendees, #task-organizer, #task-created-changed, #task-rsvp, #task-rsvp-comment').hide();
 
         var itags = get_inherited_tags(rec);
         var taglist = $('#task-tags')[(rec.tags && rec.tags.length || itags.length ? 'show' : 'hide')]().children('.task-text').empty();
         if (rec.tags && rec.tags.length) {
             $.each(rec.tags, function(i,val){
                 $('<span>').addClass('tag-element').html(Q(val)).appendTo(taglist);
             });
         }
 
         // append inherited tags
         if (itags.length) {
             $.each(itags, function(i,val){
                 if (!rec.tags || $.inArray(val, rec.tags) < 0)
                     $('<span>').addClass('tag-element inherit').html(Q(val)).appendTo(taglist);
             });
             // re-sort tags list
             $(taglist).children().sortElements(function(a,b){
                 return $.text([a]).toLowerCase() > $.text([b]).toLowerCase() ? 1 : -1;
             });
         }
 
         if (rec.status) {
           $dialog.addClass('status-' + String(rec.status).toLowerCase());
         }
 
         if (rec.recurrence && rec.recurrence_text) {
             $('#task-recurrence').show().children('.task-text').html(Q(rec.recurrence_text));
         }
         else {
             $('#task-recurrence').hide();
         }
 
         if (rec.created || rec.changed) {
             $('#task-created-changed .task-created').html(Q(rec.created_ || rcmail.gettext('unknown','tasklist')))
             $('#task-created-changed .task-changed').html(Q(rec.changed_ || rcmail.gettext('unknown','tasklist')))
             $('#task-created-changed').show()
         }
 
         // build attachments list
         $('#task-attachments').hide();
         if ($.isArray(rec.attachments)) {
             task_show_attachments(rec.attachments || [], $('#task-attachments').children('.task-text'), rec);
             if (rec.attachments.length > 0) {
                 $('#task-attachments').show();
             }
         }
 
         // list task attendees
         if (list.attendees && rec.attendees) {
 /*
             // sort resources to the end
             rec.attendees.sort(function(a,b) {
                 var j = a.cutype == 'RESOURCE' ? 1 : 0,
                     k = b.cutype == 'RESOURCE' ? 1 : 0;
                 return (j - k);
             });
 */
             var j, data, rsvp = false, mystatus = null, line, morelink, html = '', overflow = '',
                 organizer = is_organizer(rec);
 
             for (j=0; j < rec.attendees.length; j++) {
                 data = rec.attendees[j];
 
                 if (data.email && settings.identity.emails.indexOf(';'+data.email) >= 0) {
                     mystatus = data.status.toLowerCase();
                     if (data.status == 'NEEDS-ACTION' || data.status == 'TENTATIVE' || data.rsvp)
                         rsvp = mystatus;
                 }
 
                 line = task_attendee_html(data);
 
                 if (morelink)
                     overflow += line;
                 else
                     html += line;
 
                 // stop listing attendees
                 if (j == 7 && rec.attendees.length >= 7) {
                     morelink = $('<a href="#more" class="morelink"></a>').html(rcmail.gettext('andnmore', 'tasklist').replace('$nr', rec.attendees.length - j - 1));
                 }
             }
 
             if (html) {
                 $('#task-attendees').show()
                     .children('.task-text')
                     .html(html)
                     .find('a.mailtolink').click(task_attendee_click);
 
                 // display all attendees in a popup when clicking the "more" link
                 if (morelink) {
                     $('#task-attendees .task-text').append(morelink);
                     morelink.click(function(e) {
                         rcmail.show_popup_dialog(
                             '<div id="all-task-attendees" class="task-attendees">' + html + overflow + '</div>',
                             rcmail.gettext('tabattendees', 'tasklist'),
                             null,
                             {width: 450, modal: false}
                         );
                         $('#all-task-attendees a.mailtolink').click(task_attendee_click);
                         return false;
                     });
                 }
             }
 /*
             if (mystatus && !rsvp) {
                 $('#task-partstat').show().children('.changersvp')
                     .removeClass('accepted tentative declined delegated needs-action')
                     .addClass(mystatus)
                     .children('.task-text')
                     .html(Q(rcmail.gettext('itip' + mystatus, 'libcalendaring')));
             }
 */
             var show_rsvp = rsvp && !is_organizer(rec) && rec.status != 'CANCELLED';
             $('#task-rsvp')[(show_rsvp ? 'show' : 'hide')]();
             $('#task-rsvp .rsvp-buttons input').prop('disabled', false).filter('input[rel='+mystatus+']').prop('disabled', true);
 
             if (show_rsvp && rec.comment) {
                 $('#task-rsvp-comment').show().children('.task-text').html(Q(rec.comment));
             }
             $('#task-rsvp a.reply-comment-toggle').show();
             $('#task-rsvp .itip-reply-comment textarea').hide().val('');
 
             if (rec.organizer && !organizer) {
                 $('#task-organizer').show().children('.task-text').html(task_attendee_html($.extend(rec.organizer, { role:'ORGANIZER' })));
             }
         }
 
         // define dialog buttons
         var buttons = [];
         if (list.editable && !rec.readonly) {
               buttons.push({
                 text: rcmail.gettext('edit','tasklist'),
                 click: function() {
                     task_edit_dialog(me.selected_task.id, 'edit');
                 },
                 disabled: rcmail.busy
             });
 
             buttons.push({
                 text: rcmail.gettext('delete','tasklist'),
                 click: function() {
                     if (delete_task(me.selected_task.id))
                         $dialog.dialog('close');
                 },
                 disabled: rcmail.busy
             });
         }
 
         // open jquery UI dialog
         $dialog.dialog({
           modal: false,
           resizable: true,
           closeOnEscape: true,
           title: rcmail.gettext('taskdetails', 'tasklist'),
           open: function() {
               $dialog.parent().find('.ui-button:not(.ui-dialog-titlebar-close)').first().focus();
           },
           close: function() {
               $dialog.dialog('destroy').appendTo(document.body);
           },
           buttons: buttons,
           minWidth: 500,
           width: 580
         }).show();
 
         // set dialog size according to content
         me.dialog_resize($dialog.get(0), $dialog.height(), 580);
     }
 
     // render HTML code for displaying an attendee record
     function task_attendee_html(data)
     {
         var dispname = Q(data.name || data.email), tooltip = '';
 
         if (data.email) {
           tooltip = data.email;
           dispname = '<a href="mailto:' + data.email + '" class="mailtolink" data-cutype="' + data.cutype + '">' + dispname + '</a>';
         }
 
         if (data['delegated-to'])
           tooltip = rcmail.gettext('delegatedto', 'tasklist') + data['delegated-to'];
         else if (data['delegated-from'])
           tooltip = rcmail.gettext('delegatedfrom', 'tasklist') + data['delegated-from'];
 
         return '<span class="attendee ' + String(data.role == 'ORGANIZER' ? 'organizer' : data.status).toLowerCase() + '" title="' + Q(tooltip) + '">' + dispname + '</span> ';
     }
 
     /**
      * Opens the dialog to edit a task
      */
     function task_edit_dialog(id, action, presets)
     {
         $('#taskshow:ui-dialog').dialog('close');
 
         var rec = listdata[id] || presets,
             $dialog = $('<div>'),
             editform = $('#taskedit'),
             list = rec.list && me.tasklists[rec.list] ? me.tasklists[rec.list] :
                 (me.selected_list ? me.tasklists[me.selected_list] : { editable: action=='new' });
 
         if (rcmail.busy || !list.editable || (action == 'edit' && (!rec || rec.readonly)))
             return false;
 
         me.selected_task = $.extend({ valarms:[] }, rec);  // clone task object
         rec = me.selected_task;
 
         // assign temporary id
         if (!me.selected_task.id)
             me.selected_task.id = -(++idcount);
 
         // reset dialog first
         $('#taskeditform').get(0).reset();
 
         // fill form data
         var title = $('#taskedit-title').val(rec.title || '');
         var description = $('#taskedit-description').val(rec.description || '');
         var recdate = $('#taskedit-date').val(rec.date || '');
         var rectime = $('#taskedit-time').val(rec.time || '');
         var recstartdate = $('#taskedit-startdate').val(rec.startdate || '');
         var recstarttime = $('#taskedit-starttime').val(rec.starttime || '');
         var complete = $('#taskedit-completeness').val((rec.complete || 0) * 100);
         completeness_slider.slider('value', complete.val());
         var taskstatus = $('#taskedit-status').val(rec.status || '');
         var tasklist = $('#taskedit-tasklist').val(rec.list || me.selected_list).prop('disabled', rec.parent_id ? true : false);
         var notify = $('#edit-attendees-donotify').get(0);
         var invite = $('#edit-attendees-invite').get(0);
         var comment = $('#edit-attendees-comment');
 
         invite.checked = settings.itip_notify & 1 > 0;
         notify.checked = has_attendees(rec) && invite.checked;
 
         // tag-edit line
         var tagline = $(rcmail.gui_objects.edittagline).empty();
         $.each(typeof rec.tags == 'object' && rec.tags.length ? rec.tags : [''], function(i,val){
             $('<input>')
                 .attr('name', 'tags[]')
                 .attr('tabindex', '0')
                 .addClass('tag')
                 .val(val)
                 .appendTo(tagline);
         });
 
         $('input.tag', rcmail.gui_objects.edittagline).tagedit({
             animSpeed: 100,
             allowEdit: false,
             checkNewEntriesCaseSensitive: false,
             autocompleteOptions: { source: tags, minLength: 0, noCheck: true, appendTo:'#taskedit' },
             texts: { removeLinkTitle: rcmail.gettext('removetag', 'tasklist') }
         });
 
         // set alarm(s)
         me.set_alarms_edit('#taskedit-alarms', action != 'new' && rec.valarms ? rec.valarms : []);
 
         // set recurrence
         me.set_recurrence_edit(rec);
 
         // init attendees tab
         var organizer = !rec.attendees || is_organizer(rec),
             allow_invitations = organizer || (rec.owner && rec.owner == 'anonymous') || settings.invite_shared;
 
         task_attendees = [];
         attendees_list = $('#edit-attendees-table > tbody').html('');
         $('#edit-attendees-notify')[(allow_invitations && has_attendees(rec) && (settings.itip_notify & 2) ? 'show' : 'hide')]();
         $('#edit-localchanges-warning')[(has_attendees(rec) && !(allow_invitations || (rec.owner && is_organizer(rec, rec.owner))) ? 'show' : 'hide')]();
 
         // attendees (aka assignees)
         if (list.attendees) {
             var j, data, reply_selected = 0;
             if (rec.attendees) {
                 for (j=0; j < rec.attendees.length; j++) {
                     data = rec.attendees[j];
                     add_attendee(data, !allow_invitations);
                     if (allow_invitations && !data.noreply) {
                         reply_selected++;
                     }
                 }
             }
 
             // make sure comment box is visible if at least one attendee has reply enabled
             // or global "send invitations" checkbox is checked
             $('#taskeditform .attendees-commentbox')[(reply_selected || invite.checked ? 'show' : 'hide')]();
 
             // select the correct organizer identity
             var identity_id = 0;
             $.each(settings.identities, function(i,v) {
                 if (!rec.organizer || v == rec.organizer.email) {
                     identity_id = i;
                     return false;
                 }
             });
 
             $('#edit-tab-attendees').show();
             $('#edit-attendees-form')[(allow_invitations?'show':'hide')]();
             $('#edit-identities-list').val(identity_id);
             $('#taskedit-organizer')[(organizer ? 'show' : 'hide')]();
         }
         else {
             $('#edit-tab-attendees').hide();
         }
 
         // attachments
         rcmail.enable_command('remove-attachment', list.editable);
         me.selected_task.deleted_attachments = [];
         // we're sharing some code for uploads handling with app.js
         rcmail.env.attachments = [];
         rcmail.env.compose_id = me.selected_task.id; // for rcmail.async_upload_form()
 
         if ($.isArray(rec.attachments)) {
             task_show_attachments(rec.attachments, $('#taskedit-attachments'), rec, true);
         }
         else {
             $('#taskedit-attachments > ul').empty();
         }
 
         // show/hide tabs according to calendar's feature support
         $('#taskedit-tab-attachments')[(list.attachments||rec.attachments?'show':'hide')]();
 
         // activate the first tab
         $('#taskedit').tabs('option', 'active', 0);
 
         // define dialog buttons
         var buttons = {};
         buttons[rcmail.gettext('save', 'tasklist')] = function() {
             var data = me.selected_task;
             data._status_before = me.selected_task.status + '';
 
             // copy form field contents into task object to save
             $.each({ title:title, description:description, date:recdate, time:rectime, startdate:recstartdate, starttime:recstarttime, status:taskstatus, list:tasklist }, function(key,input){
                 data[key] = input.val();
             });
             data.tags = [];
             data.attachments = [];
             data.attendees = task_attendees;
             data.valarms = me.serialize_alarms('#taskedit-alarms');
             data.recurrence = me.serialize_recurrence(rectime.val());
 
             // do some basic input validation
             if (!data.title || !data.title.length) {
                 title.focus();
                 return false;
             }
             else if (data.startdate && data.date) {
                 var startdate = $.datepicker.parseDate(datepicker_settings.dateFormat, data.startdate, datepicker_settings);
                 var duedate = $.datepicker.parseDate(datepicker_settings.dateFormat, data.date, datepicker_settings);
                 if (startdate > duedate) {
                     alert(rcmail.gettext('invalidstartduedates', 'tasklist'));
                     return false;
                 }
             }
 
             // collect tags
             $('input[type="hidden"]', rcmail.gui_objects.edittagline).each(function(i,elem) {
                 if (elem.value)
                     data.tags.push(elem.value);
             });
             // including the "pending" one in the text box
             var newtag = $('#tagedit-input').val();
             if (newtag != '') {
                 data.tags.push(newtag);
             }
 
             // uploaded attachments list
             for (var i in rcmail.env.attachments) {
                 if (i.match(/^rcmfile(.+)/))
                     data.attachments.push(RegExp.$1);
             }
 
             // task assigned to a new list
             if (data.list && listdata[id] && data.list != listdata[id].list) {
                 data._fromlist = list.id;
             }
 
             data.complete = complete.val() / 100;
             if (isNaN(data.complete))
                 data.complete = null;
             else if (data.complete == 1.0 && rec.status === '')
                 data.status = 'COMPLETED';
 
             if (!data.list && list.id)
                 data.list = list.id;
 
             if (!data.tags.length)
                 data.tags = '';
 
             if (organizer) {
                 data._identity = $('#edit-identities-list option:selected').val();
                 delete data.organizer;
             }
 
             // per-attendee notification suppression
             var need_invitation = false;
             if (allow_invitations) {
                 $.each(data.attendees, function (i, v) {
                     if (v.role != 'ORGANIZER') {
                         if ($('input.edit-attendee-reply[value="' + v.email + '"]').prop('checked')) {
                             need_invitation = true;
                             delete data.attendees[i]['noreply'];
                         }
                         else if (settings.itip_notify > 0) {
                             data.attendees[i].noreply = 1;
                         }
                     }
                 });
             }
 
             // tell server to send notifications
             if ((data.attendees.length || (rec.id && rec.attendees.length)) && allow_invitations && (notify.checked || invite.checked || need_invitation)) {
                 data._notify = settings.itip_notify;
                 data._comment = comment.val();
             }
             else if (data._notify) {
                 delete data._notify;
             }
 
             if (save_task(data, action))
                 $dialog.dialog('close');
         };
 
         if (action != 'new') {
             buttons[rcmail.gettext('delete', 'tasklist')] = function() {
                 if (delete_task(rec.id))
                     $dialog.dialog('close');
             };
         }
 
         buttons[rcmail.gettext('cancel', 'tasklist')] = function() {
             $dialog.dialog('close');
         };
 
         // open jquery UI dialog
         $dialog.dialog({
           modal: true,
           resizable: (!bw.ie6 && !bw.ie7),  // disable for performance reasons
           closeOnEscape: false,
           title: rcmail.gettext((action == 'edit' ? 'edittask' : 'newtask'), 'tasklist'),
           close: function() {
               editform.hide().appendTo(document.body);
               $dialog.dialog('destroy').remove();
           },
           buttons: buttons,
           minHeight: 460,
           minWidth: 500,
           width: 580
         }).append(editform.show());  // adding form content AFTERWARDS massively speeds up opening on IE
 
         title.select();
 
         // set dialog size according to content
         me.dialog_resize($dialog.get(0), $dialog.height(), 580);
     }
 
     /**
      * Open a task attachment either in a browser window for inline view or download it
      */
     function load_attachment(rec, att)
     {
         // can't open temp attachments
         if (!rec.id || rec.id < 0)
             return false;
 
         var qstring = '_id='+urlencode(att.id)+'&_t='+urlencode(rec.recurrence_id||rec.id)+'&_list='+urlencode(rec.list);
 
         // open attachment in frame if it's of a supported mimetype
         // similar as in app.js and calendar_ui.js
         if (att.id && att.mimetype && $.inArray(att.mimetype, settings.mimetypes)>=0) {
             if (rcmail.open_window(rcmail.env.comm_path+'&_action=get-attachment&'+qstring+'&_frame=1', true, true)) {
                 return;
             }
         }
 
         rcmail.goto_url('get-attachment', qstring+'&_download=1', false);
     };
 
     /**
      * Build task attachments list
      */
     function task_show_attachments(list, container, rec, edit)
     {
         var i, id, len, content, li, elem,
             ul = $('<ul>').addClass('attachmentslist');
 
         for (i=0, len=list.length; i<len; i++) {
             elem = list[i];
             li = $('<li>').addClass(elem.classname);
 
             if (edit) {
                 rcmail.env.attachments[elem.id] = elem;
                 // delete icon
                 content = $('<a>')
                     .attr('href', '#delete')
                     .attr('title', rcmail.gettext('delete'))
                     .addClass('delete')
                     .click({ id:elem.id }, function(e) {
                         remove_attachment(this, e.data.id);
                         return false;
                     });
 
                 if (!rcmail.env.deleteicon) {
                     content.html(rcmail.gettext('delete'));
                 }
                 else {
                     $('<img>').attr('src', rcmail.env.deleteicon).attr('alt', rcmail.gettext('delete')).appendTo(content);
                 }
 
                 li.append(content);
             }
 
             // name/link
             $('<a>')
                 .attr('href', '#load')
                 .addClass('file')
                 .html(elem.name).click({ task:rec, att:elem }, function(e) {
                     load_attachment(e.data.task, e.data.att);
                     return false;
                 }).appendTo(li);
 
             ul.append(li);
         }
 
         if (edit && rcmail.gui_objects.attachmentlist) {
             ul.id = rcmail.gui_objects.attachmentlist.id;
             rcmail.gui_objects.attachmentlist = ul.get(0);
         }
 
         container.empty().append(ul);
     };
 
     /**
      *
      */
     function remove_attachment(elem, id)
     {
         $(elem.parentNode).hide();
         me.selected_task.deleted_attachments.push(id);
         delete rcmail.env.attachments[id];
     }
 
     /**
      *
      */
     function add_childtask(id)
     {
         if (rcmail.busy)
             return false;
 
         var rec = listdata[id];
         task_edit_dialog(null, 'new', { parent_id:id, list:rec.list });
     }
 
     /**
      * Delete the given task
      */
     function delete_task(id)
     {
         var rec = listdata[id];
         if (!rec || rec.readonly || rcmail.busy)
             return false;
 
         var html, buttons = [], $dialog = $('<div>');
 
         // Subfunction to submit the delete command after confirm
         var _delete_task = function(id, mode) {
             var rec = listdata[id],
                 li = $('li[rel="'+id+'"]', rcmail.gui_objects.resultlist).hide(),
                 decline = $dialog.find('input.confirm-attendees-decline:checked').length,
                 notify = $dialog.find('input.confirm-attendees-notify:checked').length;
 
             saving_lock = rcmail.set_busy(true, 'tasklist.savingdata');
             rcmail.http_post('task', { action:'delete', t:{ id:rec.id, list:rec.list, _decline:decline, _notify:notify }, mode:mode, filter:filtermask });
 
             // move childs to parent/root
             if (mode != 1 && rec.children !== undefined) {
                 var parent_node = rec.parent_id ? $('li[rel="'+rec.parent_id+'"] > .childtasks', rcmail.gui_objects.resultlist) : null;
                 if (!parent_node || !parent_node.length)
                     parent_node = rcmail.gui_objects.resultlist;
 
                 $.each(rec.children, function(i,cid) {
                     var child = listdata[cid];
                     child.parent_id = rec.parent_id;
                     resort_task(child, $('li[rel="'+cid+'"]').appendTo(parent_node), true);
                 });
             }
 
             li.remove();
             delete listdata[id];
         }
 
         if (rec.children && rec.children.length) {
             html = rcmail.gettext('deleteparenttasktconfirm','tasklist');
             buttons.push({
                 text: rcmail.gettext('deletethisonly','tasklist'),
                 click: function() {
                     _delete_task(id, 0);
                     $(this).dialog('close');
                 }
             });
             buttons.push({
                 text: rcmail.gettext('deletewithchilds','tasklist'),
                 click: function() {
                     _delete_task(id, 1);
                     $(this).dialog('close');
                 }
             });
         }
         else {
             html = rcmail.gettext('deletetasktconfirm','tasklist');
             buttons.push({
                 text: rcmail.gettext('delete','tasklist'),
                 click: function() {
                     _delete_task(id, 0);
                     $(this).dialog('close');
                 }
             });
         }
 
         if (is_attendee(rec)) {
             html += '<div class="task-dialog-message">' +
                 '<label><input class="confirm-attendees-decline" type="checkbox" checked="checked" value="1" name="_decline" />&nbsp;' +
                     rcmail.gettext('itipdeclinetask', 'tasklist') + 
                 '</label></div>';
         }
         else if (has_attendees(rec) && is_organizer(rec)) {
             html += '<div class="task-dialog-message">' +
                 '<label><input class="confirm-attendees-notify" type="checkbox" checked="checked" value="1" name="_notify" />&nbsp;' +
                     rcmail.gettext('sendcancellation', 'tasklist') + 
                 '</label></div>';
         }
 
         buttons.push({
             text: rcmail.gettext('cancel', 'tasklist'),
             click: function() {
                 $(this).dialog('close');
             }
         });
 
         $dialog.html(html);
         $dialog.dialog({
           modal: true,
           width: 520,
           dialogClass: 'warning no-close',
           title: rcmail.gettext('deletetask', 'tasklist'),
           buttons: buttons,
           close: function(){
               $dialog.dialog('destroy').hide();
           }
         }).addClass('tasklist-confirm').show();
 
         return true;
     }
 
     /**
      * Check if the given task matches the current filtermask and tag selection
      */
     function match_filter(rec, cache, recursive)
     {
         // return cached result
         if (typeof cache[rec.id] != 'undefined' && recursive != 2) {
             return cache[rec.id];
         }
 
         var match = !filtermask || (filtermask & rec.mask) == filtermask;
 
         // in focusview mode, only tasks from the selected list are allowed
         if (focusview && rec.list != focusview)
             match = false;
 
         if (match && tagsfilter.length) {
             match = rec.tags && rec.tags.length;
             var alltags = get_inherited_tags(rec).concat(rec.tags || []);
             for (var i=0; match && i < tagsfilter.length; i++) {
                 if ($.inArray(tagsfilter[i], alltags) < 0)
                     match = false;
             }
         }
 
         // check if a child task matches the tags
         if (!match && (recursive||0) < 2 && rec.children && rec.children.length) {
             for (var j=0; !match && j < rec.children.length; j++) {
                 match = match_filter(listdata[rec.children[j]], cache, 1);
             }
         }
 
         // walk up the task tree and check if a parent task matches
         var parent_id;
         if (!match && !recursive && (parent_id = rec.parent_id)) {
             while (!match && parent_id && listdata[parent_id]) {
                 match = match_filter(listdata[parent_id], cache, 2);
                 parent_id = listdata[parent_id].parent_id;
             }
         }
 
         if (recursive != 1) {
             cache[rec.id] = match;
         }
         return match;
     }
 
     /**
      *
      */
     function get_inherited_tags(rec)
     {
         var parent_id, itags = [];
 
         if ((parent_id = rec.parent_id)) {
             while (parent_id && listdata[parent_id]) {
                 itags = itags.concat(listdata[parent_id].tags || []);
                 parent_id = listdata[parent_id].parent_id;
             }
         }
 
         return $.unqiqueStrings(itags);
     }
 
     /**
      * Change tasks list sorting
      */
     function list_set_sort(col)
     {
         if (settings.sort_col != col) {
           settings.sort_col = col;
           $('#taskviewsortmenu .sortcol').attr('aria-checked', 'false').removeClass('selected')
               .filter('.by-' + col).attr('aria-checked', 'true').addClass('selected');
 
           // re-sort list index and re-render list
           listindex.sort(function(a, b) { return task_cmp(listdata[a], listdata[b]); });
           render_tasklist();
 
           rcmail.enable_command('list-order', settings.sort_col != 'auto');
           $('#taskviewsortmenu .sortorder').removeClass('selected').filter('[aria-checked=true]').addClass('selected');
 
           rcmail.save_pref({ name: 'tasklist_sort_col', value: (col == 'auto' ? '' : col) });
         }
     }
 
     /**
      * Change tasks list sort order
      */
     function list_set_order(order)
     {
         if (settings.sort_order != order) {
           settings.sort_order = order;
           $('#taskviewsortmenu .sortorder').attr('aria-checked', 'false').removeClass('selected')
               .filter('.' + order).attr('aria-checked', 'true').addClass('selected');
 
           // re-sort list index and re-render list
           listindex.sort(function(a, b) { return task_cmp(listdata[a], listdata[b]); });
           render_tasklist();
 
           rcmail.save_pref({ name: 'tasklist_sort_order', value: order });
         }
     }
 
     /**
      *
      */
     function list_edit_dialog(id)
     {
         var list = me.tasklists[id],
             $dialog = $(rcmail.gui_containers.tasklistform);
 
         if ($dialog.is(':ui-dialog'))
             $dialog.dialog('close');
 
         if (!list)
             list = { name:'', editable:true, showalarms:true };
 
         var editform, name, alarms;
 
         $dialog.html(rcmail.get_label('loading'));
         $.ajax({
             type: 'GET',
             dataType: 'html',
             url: rcmail.url('tasklist'),
             data: { action:(list.id ? 'form-edit' : 'form-new'), l:{ id:list.id } },
             success: function(data) {
                 $dialog.html(data);
                 rcmail.triggerEvent('tasklist_editform_load', list);
 
                 // resize and reposition dialog window
                 editform = $('#tasklisteditform');
                 me.dialog_resize(rcmail.gui_containers.tasklistform, editform.height(), editform.width());
 
                 name = $('#taskedit-tasklistame').prop('disabled', list.norename||false).val(list.editname || list.name);
                 alarms = $('#taskedit-showalarms').prop('checked', list.showalarms).get(0);
                 name.select();
             }
         });
 
         // dialog buttons
         var buttons = {};
 
         buttons[rcmail.gettext('save','tasklist')] = function() {
             // do some input validation
             if (!name.val() || name.val().length < 2) {
                 alert(rcmail.gettext('invalidlistproperties', 'tasklist'));
                 name.select();
                 return;
             }
 
             // post data to server
             var data = editform.serializeJSON();
             if (list.id)
                 data.id = list.id;
             if (alarms)
                 data.showalarms = alarms.checked ? 1 : 0;
 
             saving_lock = rcmail.set_busy(true, 'tasklist.savingdata');
             rcmail.http_post('tasklist', { action:(list.id ? 'edit' : 'new'), l:data });
             $dialog.dialog('close');
         };
 
         buttons[rcmail.gettext('cancel','tasklist')] = function() {
             $dialog.dialog('close');
         };
 
         // open jquery UI dialog
         $dialog.dialog({
             modal: true,
             resizable: true,
             closeOnEscape: false,
             title: rcmail.gettext((list.id ? 'editlist' : 'createlist'), 'tasklist'),
             open: function() {
                 $dialog.parent().find('.ui-dialog-buttonset .ui-button').first().addClass('mainaction');
             },
             close: function() {
                 $dialog.dialog('destroy').hide();
             },
             buttons: buttons,
             minWidth: 400,
             width: 420
         }).show();
     }
 
     /**
      *
      */
     function list_delete(id)
     {
         var list = me.tasklists[id];
         if (list && !list.norename && confirm(rcmail.gettext(list.children ? 'deletelistconfirmrecursive' : 'deletelistconfirm', 'tasklist'))) {
             saving_lock = rcmail.set_busy(true, 'tasklist.savingdata');
             rcmail.http_post('tasklist', { action:'delete', l:{ id:list.id } });
             return true;
         }
         return false;
     }
 
     /**
      *
      */
     function list_remove(id)
     {
         var list = me.tasklists[id];
         if (list && list.removable) {
             destroy_list(list);
             rcmail.http_post('tasklist', { action:'subscribe', l:{ id:list.id, active:0, permanent:0, recursive:1 } });
         }
     }
 
     /**
      * Callback from server to finally remove the given list
      */
     function destroy_list(prop)
     {
         var li, delete_ids = [],
             list = me.tasklists[prop.id];
 
         // find sub-lists
         if (list && list.children) {
             for (var child_id in me.tasklists) {
                 if (String(child_id).indexOf(prop.id) == 0)
                     delete_ids.push(child_id);
             }
         }
         else {
             delete_ids.push(prop.id);
         }
 
         // delete all subfolders in the list
         for (var i=0; i < delete_ids.length; i++) {
             id = delete_ids[i];
             list = me.tasklists[id];
             tasklists_widget.remove(id);
 
             if (list) {
                 list.active = false;
                 // delete me.tasklists[prop.id];
                 unlock_saving();
                 remove_tasks(list.id);
             }
             $("#taskedit-tasklist option[value='"+id+"']").remove();
         }
     }
 
     /**
      *
      */
     function insert_list(prop)
     {
         if (prop._reload) {
             rcmail.redirect(rcmail.url(''));
             return;
         }
 
         tasklists_widget.insert({
             id: prop.id,
             classes: [ prop.group || '' ],
             virtual: prop.virtual,
             html: prop.html
         }, prop.parent || null, prop.group);
 
         // flag as tasklist for drag & drop
         $(tasklists_widget.get_item(prop.id)).data('type', 'tasklist');
 
         delete prop.html;
         me.tasklists[prop.id] = prop;
 
         // append to list selector in task edit dialog, too (#2985)
         $('<option>').attr('value', prop.id).html(Q(prop.name)).appendTo('#taskedit-tasklist');
     }
 
     /**
      *
      */
     function update_list(prop)
     {
         var id = prop.oldid || prop.id,
             li = tasklists_widget.get_item(id);
 
         if (prop._reload) {
             rcmail.redirect(rcmail.url(''));
             return;
         }
 
         if (me.tasklists[id] && li) {
             delete me.tasklists[id];
             me.tasklists[prop.id] = prop;
             $(li).find('input').first().val(prop.id);
             $(li).find('.listname').first().html(Q(prop.name));
             tasklists_widget.update(id, { id:prop.id, html:li.children().first() });
         }
     }
 
     /**
      * Execute search
      */
     function quicksearch()
     {
         var q;
         if (rcmail.gui_objects.qsearchbox && (q = rcmail.gui_objects.qsearchbox.value)) {
             var id = 'search-'+q;
             var resources = [];
 
             for (var rid in me.tasklists) {
                 if (me.tasklists[rid].active) {
                     resources.push(rid);
                 }
             }
             id += '@'+resources.join(',');
 
             // ignore if query didn't change
             if (search_request == id)
                 return;
 
             search_request = id;
             search_query = q;
 
             list_tasks();
         }
         else  // empty search input equals reset
             this.reset_search();
     }
 
     /**
      * Reset search and get back to normal listing
      */
     function reset_search()
     {
         $(rcmail.gui_objects.qsearchbox).val('');
 
         if (search_request) {
             search_request = search_query = null;
             list_tasks();
         }
     }
 
 
     /**** Utility functions ****/
 
     // same as str.split(delimiter) but it ignores delimiters within quoted strings
     var explode_quoted_string = function(str, delimiter)
     {
       var result = [],
         strlen = str.length,
         q, p, i, char, last;
 
       for (q = p = i = 0; i < strlen; i++) {
         char = str.charAt(i);
         if (char == '"' && last != '\\') {
           q = !q;
         }
         else if (!q && char == delimiter) {
           result.push(str.substring(p, i));
           p = i + 1;
         }
         last = char;
       }
 
       result.push(str.substr(p));
       return result;
     };
 
     /**
      * Clear any text selection
      * (text is probably selected when double-clicking somewhere)
      */
     function clearSelection()
     {
         if (document.selection && document.selection.empty) {
             document.selection.empty() ;
         }
         else if (window.getSelection) {
             var sel = window.getSelection();
             if (sel && sel.removeAllRanges)
                 sel.removeAllRanges();
         }
     }
 
     /**
      * Hide all open popup menus
      */
     function clear_popups(e)
     {
         var count = 0, target = e.target;
         if (target && target.className == 'inner')
             target = e.target.parentNode;
 
         $('.popupmenu:visible').each(function(i, elem){
             var menu = $(elem), id = elem.id;
             if (id && target.id != id+'link' && (!menu.data('sticky') || !target_overlaps(e.target, elem))) {
                 menu.hide();
                 count++;
             }
         });
         return count;
     }
 
     /**
      * Check whether the event target is a descentand of the given element
      */
     function target_overlaps(target, elem)
     {
         while (target.parentNode) {
             if (target.parentNode == elem)
                 return true;
             target = target.parentNode;
         }
         return false;
     }
 
     /**
      *
      */
     function active_lists()
     {
         var active = [];
         for (var id in me.tasklists) {
             if (me.tasklists[id].active)
                 active.push(id);
         }
         return active;
     }
 
     // resize and reposition (center) the dialog window
     this.dialog_resize = function(id, height, width)
     {
         var win = $(window), w = win.width(), h = win.height();
             $(id).dialog('option', { height: Math.min(h-20, height+130), width: Math.min(w-20, width+50) })
                 .dialog('option', 'position', ['center', 'center']);  // only works in a separate call (!?)
     };
 
     /**
      * Enable/disable focusview mode for the given list
      */
     function set_focusview(id)
     {
         if (focusview && focusview != id) {
             $(tasklists_widget.get_item(focusview)).find('.tasklist').first().removeClass('focusview')
                 .find('a.quickview').attr('aria-checked', 'false');
         }
 
         focusview = id;
 
         var li = $(tasklists_widget.get_item(id)).find('.tasklist').first();
 
         // activate list if necessary
         if (focusview && !me.tasklists[id].active) {
             li.find('input[type=checkbox]').get(0).checked = true;
             me.tasklists[id].active = true;
             fetch_counts();
         }
 
         // update list
         list_tasks(null);
 
         if (focusview) {
             li.addClass('focusview').find('a.quickview').attr('aria-checked', 'true');
+            $('body').addClass('quickview-active');
+        }
+        else {
+            $('body').removeClass('quickview-active');
         }
     }
 
 
     // init dialog by default
     init_taskedit();
 }
 
 
 // extend jQuery
 // from http://james.padolsey.com/javascript/sorting-elements-with-jquery/
 jQuery.fn.sortElements = (function(){
     var sort = [].sort;
 
     return function(comparator, getSortable) {
         getSortable = getSortable || function(){ return this };
 
         var last = null;
         return sort.call(this, comparator).each(function(i){
             // at this point the array is sorted, so we can just detach each one from wherever it is, and add it after the last
             var node = $(getSortable.call(this));
             var parent = node.parent();
             if (last) last.after(node);
             else      parent.prepend(node);
             last = node;
         });
     };
 })();
 
 // equivalent to $.unique() but working on arrays of strings
 jQuery.unqiqueStrings = (function() {
     return function(arr) {
         var hash = {}, out = [];
 
         for (var i = 0; i < arr.length; i++) {
             hash[arr[i]] = 0;
         }
         for (var val in hash) {
             out.push(val);
         }
 
         return out;
     };
 })();
 
 
 /* tasklist plugin UI initialization */
 var rctasks;
 window.rcmail && rcmail.addEventListener('init', function(evt) {
 
   rctasks = new rcube_tasklist_ui($.extend(rcmail.env.tasklist_settings, rcmail.env.libcal_settings));
 
   // register button commands
   rcmail.register_command('newtask', function(){ rctasks.edit_task(null, 'new', {}); }, true);
   //rcmail.register_command('print', function(){ rctasks.print_list(); }, true);
 
   rcmail.register_command('list-create', function(){ rctasks.list_edit_dialog(null); }, true);
   rcmail.register_command('list-edit', function(){ rctasks.list_edit_dialog(rctasks.selected_list); }, false);
   rcmail.register_command('list-delete', function(){ rctasks.list_delete(rctasks.selected_list); }, false);
   rcmail.register_command('list-remove', function(){ rctasks.list_remove(rctasks.selected_list); }, false);
 
   rcmail.register_command('search', function(){ rctasks.quicksearch(); }, true);
   rcmail.register_command('reset-search', function(){ rctasks.reset_search(); }, true);
   rcmail.register_command('expand-all', function(){ rctasks.expand_collapse(true); }, true);
   rcmail.register_command('collapse-all', function(){ rctasks.expand_collapse(false); }, true);
 
   rctasks.init();
 });