diff --git a/calendar/inc/class.calendar_uiforms.inc.php b/calendar/inc/class.calendar_uiforms.inc.php
index 061f0a04f8..c7ac6308da 100644
--- a/calendar/inc/class.calendar_uiforms.inc.php
+++ b/calendar/inc/class.calendar_uiforms.inc.php
@@ -1920,6 +1920,16 @@ class calendar_uiforms extends calendar_ui
 		$response = egw_json_response::get();
 		//$response->addAlert(__METHOD__.'('.array2string($edit_content).')');
 
+		// convert start/end date-time values to timestamps
+		foreach(array('start', 'end') as $name)
+		{
+			if (!empty($edit_content[$name]))
+			{
+				$date = new egw_time($edit_content[$name]);
+				$edit_content[$name] = $date->format('ts');
+			}
+		}
+
 		if ($edit_content['duration'])
 		{
 			$edit_content['end'] = $edit_content['start'] + $edit_content['duration'];
diff --git a/calendar/js/app.js b/calendar/js/app.js
index be25053d13..542e76aecd 100644
--- a/calendar/js/app.js
+++ b/calendar/js/app.js
@@ -838,14 +838,8 @@ app.classes.calendar = AppJS.extend(
 
 			var sTime = this.et2.getWidgetById(selectedId+'start');
 
-			var eTime = this.et2.getWidgetById(selectedId+'[end]');
-			 //Catches the start time from freetime content
-			var str = sTime.get_value();
-
-			var end = parseInt(str) + parseInt(content['duration']);
-
 			//check the parent window is still open before to try to access it
-			if (window.opener)
+			if (window.opener && sTime)
 			{
 				var editWindowObj = window.opener.etemplate2.getByApplication('calendar')[0];
 				if (typeof editWindowObj != "undefined")
@@ -854,8 +848,9 @@ app.classes.calendar = AppJS.extend(
 					var endTime = editWindowObj.widgetContainer.getWidgetById('end');
 					if (startTime && endTime)
 					{
-						startTime.set_value(str);
-						endTime.set_value(end);
+						startTime.set_value(sTime.get_value());
+						endTime.set_value(sTime.get_value());
+						endTime.set_value('+'+content['duration']);
 					}
 				}
 			}
diff --git a/calendar/templates/default/app.css b/calendar/templates/default/app.css
index 308a8e44df..e3ec16fe0c 100644
--- a/calendar/templates/default/app.css
+++ b/calendar/templates/default/app.css
@@ -627,4 +627,8 @@ e.g. the div with class calendar_calTimeGrid is generated by the timeGridWidget
 
 #calendar-list_undelete_popup, #calendar-list_delete_popup   {
 	display: none;
-}
\ No newline at end of file
+}
+
+.calendar_freetime_header { font-size: 120%; font-weight: bold; }
+.calendar_freetime_timeframe { position: relative;}
+.calendar_freetime_dow { position: absolute; }
diff --git a/calendar/templates/default/freetimesearch.xet b/calendar/templates/default/freetimesearch.xet
index bf2d072f1a..ca10c54ffa 100644
--- a/calendar/templates/default/freetimesearch.xet
+++ b/calendar/templates/default/freetimesearch.xet
@@ -35,14 +35,13 @@
 			</columns>
 			<rows>
 				<row class="dialogHeader">
-					<description class="calendar_size120b" value="Freetime Search"/>
-					<description class="message" no_lang="1" id="msg"/>
+					<description class="calendar_freetime_header" value="Freetime Search" span="all"/>
 				</row>
-				<row class="dialogOperators high">
+				<row >
 					<description value="Startdate / -time"/>
 					<date-time id="start" statustext="Startdate and -time of the search"/>
 				</row>
-				<row class="dialogOperators">
+				<row>
 					<description value="Duration"/>
 					<hbox>
 						<menulist>
@@ -51,17 +50,17 @@
 						<date-time id="end" statustext="Enddate / -time of the meeting, eg. for more then one day"/>
 					</hbox>
 				</row>
-				<row class="dialogOperators">
+				<row>
 					<description value="Timeframe"/>
-					<hbox>
+					<hbox class="calendar_freetime_timeframe">
 						<date-timeonly id="start_time" statustext="Timeframe to search"/>
 						<description value="til"/>
 						<date-timeonly id="end_time" statustext="Timeframe to search"/>
 						<description value="Weekdays"/>
-						<listbox type="select-dow" rows="3" id="weekdays" statustext="Weekdays to use in search"/>
+						<select-dow rows="10" id="weekdays" statustext="Weekdays to use in search" class="calendar_freetime_dow"/>
 					</hbox>
 				</row>
-				<row class="dialogOperators">
+				<row>
 					<button label="New search" id="search" statustext="new search with the above parameters"/>
 					<hbox>
 						<menulist>
@@ -70,14 +69,13 @@
 						<button id="cancel" label="Cancel" statustext="Close the window" onclick="window.close();"/>
 					</hbox>
 				</row>
-				<row class="dialogOperators">
+				<row>
 					<template content="freetime" span="all" id="calendar.freetimesearch.rows"/>
 				</row>
 			</rows>
 		</grid>
 		<styles>
-			.calendar_size120b { text-size: 120%; font-weight: bold; }
-			.end_hide { visibility: hidden; }
+			body { background-color: white; }
 		</styles>
 	</template>
 </overlay>
\ No newline at end of file
diff --git a/calendar/templates/pixelegg/app.css b/calendar/templates/pixelegg/app.css
index 7ec5d7e634..09db451db8 100755
--- a/calendar/templates/pixelegg/app.css
+++ b/calendar/templates/pixelegg/app.css
@@ -11,7 +11,7 @@
  * @package calendar
  * @version $Id$
  */
-/* $Id: app.css 47456 2014-07-01 12:03:39Z hnategh $ */
+/* $Id: app.css 48162 2014-08-21 12:20:44Z hnategh $ */
 /* Header classes */
 tr.dialogHeader td,
 tr.dialogHeader2 td,
@@ -631,6 +631,16 @@ e.g. the div with class calendar_calTimeGrid is generated by the timeGridWidget
 #calendar-list_delete_popup {
   display: none;
 }
+.calendar_freetime_header {
+  font-size: 120%;
+  font-weight: bold;
+}
+.calendar_freetime_timeframe {
+  position: relative;
+}
+.calendar_freetime_dow {
+  position: absolute;
+}
 /*generell*/
 .egw_fw_content_browser_iframe img[src$="svg"] {
   background-color: #828282 !important;
diff --git a/etemplate/js/et2_widget_date.js b/etemplate/js/et2_widget_date.js
index 9bc490eee2..e0bacfe796 100644
--- a/etemplate/js/et2_widget_date.js
+++ b/etemplate/js/et2_widget_date.js
@@ -106,6 +106,15 @@ var et2_date = et2_inputWidget.extend(
 		}
 	},
 
+	/**
+	 * Setting date
+	 *
+	 * @param {string|number|Date} _value supported are the following formats:
+	 * - Date object with usertime as UTC value
+	 * - string like Date.toJSON()
+	 * - string or number with timestamp in usertime like server-side uses it
+	 * - string starting with + or - to add/substract given number of seconds from current value, "+600" to add 10 minutes
+	 */
 	set_value: function(_value) {
 		var old_value = this._oldValue;
 		if(_value === null || _value === "" || _value === undefined ||
@@ -211,9 +220,17 @@ var et2_date = et2_inputWidget.extend(
 		} else if (typeof _value == 'object' && _value.valueOf) {
 			this.date = _value;
 		} else if (typeof _value == 'number' || !isNaN(_value)) {
-			// Timestamp
-			// JS dates use milliseconds
-			this.date.setTime(parseInt(_value)*1000);
+			// string starting with + or - --> add/substract number of seconds from current value
+			if (typeof _value == 'string' && (_value[0] == '+' || _value[0] == '-'))
+			{
+				this.date.setTime(this.date.getTime()+1000*parseInt(_value));
+			}
+			else
+			{
+				// Timestamp in usertime need to be corrected with timezoneoffset as we internally use UTC for egw usertime
+				// JS dates use milliseconds
+				this.date.setTime(1000*(parseInt(_value)-60*this.date.getTimezoneOffset()));
+			}
 		}
 
 		// Update input - popups do, but framework doesn't