diff --git a/content/messages.js.php b/content/messages.js.php
index 014c331c5..e61108eb6 100644
--- a/content/messages.js.php
+++ b/content/messages.js.php
@@ -24,6 +24,7 @@ var MessagePersonID=null;
 var MessagesTreeDatasource=''; // Datasource des Adressen Trees
 var MessagesSelectID='';
 var MessageSenderPersonID='';
+var MessageIFrameIsInitialized=false;
 
 var MessagesTreeSinkObserver =
 {
@@ -102,9 +103,9 @@ function MessagesNewMessage()
 	else
 	{
 		var prestudentIdArray = getMultipleTreeCellText(tree, 'student-treecol-prestudent_id');
-		
+
 		var action = '<?php echo APP_ROOT ?>index.ci.php/system/Messages/write/' + MessageSenderPersonID;
-		
+
 		openWindowPostArray(action, 'prestudent_id', prestudentIdArray);
 	}
 }
@@ -116,7 +117,7 @@ function MessagesSendAnswer()
 {
 	var messagesTree = document.getElementById('messages-tree');
 	var studentsTree = parent.document.getElementById('student-tree');
-	
+
 	if (messagesTree.currentIndex == -1)
 	{
 		alert("Bitte markieren Sie zuerst eine Nachricht");
@@ -126,9 +127,9 @@ function MessagesSendAnswer()
 		var MessageId = getTreeCellText(messagesTree, 'messages-tree-message_id', messagesTree.currentIndex);
 		var RecipientID = getTreeCellText(messagesTree, 'messages-tree-recipient_id', messagesTree.currentIndex);
 		var prestudentIdArray = new Array(getTreeCellText(studentsTree, 'student-treecol-prestudent_id', studentsTree.currentIndex));
-		
+
 		var action = '<?php echo APP_ROOT ?>index.ci.php/system/Messages/write/' + MessageSenderPersonID + '/' + MessageId + '/' + RecipientID;
-		
+
 		openWindowPostArray(action, 'prestudent_id', prestudentIdArray);
 	}
 }
@@ -156,5 +157,35 @@ function MessageAuswahl()
 			document.getElementById('messages-button-answer').disabled=false;
 		}
 	}
-	document.getElementById('message-wysiwyg').value=text;
+
+	MessagesIFrameSetHTML(text);
 }
+
+function MessagesIFrameSetHTML(val)
+{
+	MessageIFrameInit();
+	netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
+	editor = document.getElementById('message-wysiwyg');
+
+	if(editor.contentWindow.document.body.innerHTML!='')
+	{
+		//Inhalt leeren
+		editor.contentDocument.execCommand("selectall", false, null);
+		editor.contentDocument.execCommand("delete", false, null);
+	}
+	//Value setzen
+	if(val!='')
+		editor.contentDocument.execCommand("inserthtml", false, val);
+}
+
+function MessageIFrameInit()
+{
+	if(!MessageIFrameIsInitialized)
+	{
+		netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
+		editor = document.getElementById('message-wysiwyg');
+		editor.contentDocument.designMode = 'on';
+		editor.style.backgroundColor="#FFFFFF";
+		MessageIFrameIsInitialized=true;
+	}
+}
\ No newline at end of file
diff --git a/content/messages.xul.php b/content/messages.xul.php
index 106fb7104..35e279c1d 100644
--- a/content/messages.xul.php
+++ b/content/messages.xul.php
@@ -73,7 +73,7 @@ echo ']>
 	<button oncommand="MessagesSendAnswer()" id="messages-button-answer" label="Antworten"/>
 </hbox>
 
-<hbox>
+<hbox flex="1">
 
 <tree id="messages-tree" seltype="single" hidecolumnpicker="false" flex="1"
 	datasources="rdf:null" ref="http://www.technikum-wien.at/messages"
@@ -142,8 +142,11 @@ echo ']>
 		</treechildren>
 	</template>
 </tree>
+<splitter collapse="after" persist="state">
+	<grippy />
+</splitter>
+<iframe id="message-wysiwyg" editortype="html" src="about:blank" flex="1" type="content-primary" style="min-width: 100px; min-height: 100px; border: 1px solid gray; margin: 10px;"/>
 </hbox>
-<box class="WYSIWYG" id="message-wysiwyg" flex="1"/>
-<spacer flex="1" />
+
 </vbox>
 </window>