This is the code for the
HTMLEditorExtender[
^] which can be added to a textbox. You might want to try it out as an alternative solution.
<script>
function onContentsChange() {
alert('contents changed');
}
</script>
<asp:TextBox runat="server"
ID="txtBox1"
TextMode="MultiLine"
Columns="50"
Rows="10"
Text="Hello <b>world!</b>" />
<ajaxToolkit:HtmlEditorExtender
ID="htmlEditorExtender1"
TargetControlID="txtBox1"
OnClientChange="onContentsChange"
runat="server" >
</ajaxToolkit:HtmlEditorExtender>
cheers,
Marco