User love to cut and paste from here and there. apply and reapply font styles etc.
This continuously leaves residual html, what for the user results in ‘strange behavior’.
Is there some way to clean or prevent this? From the editor except from going in the source?

<%@ Page Language="VB" AutoEventWireup="false" CodeBehind="Sample.aspx.vb" Inherits="RadControlsWebApp1.Sample" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" style="width: 100%; height: 100%; margin: 0px auto; padding: 0px;"> <head runat="server"> <title></title> <telerik:RadStyleSheetManager ID="RadStyleSheetManager1" runat="server" /> </head> <body style="width: 100%; height: 100%; margin: 0px auto; padding: 0px;"> <form id="form1" runat="server" style="width: 100%; height: 100%; margin: 0px auto; padding: 0px;"> <telerik:RadScriptManager ID="RadScriptManager1" runat="server"> <Scripts> <%--Needed for JavaScript IntelliSense in VS2010--%> <%--For VS2008 replace RadScriptManager with ScriptManager--%> <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" /> <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" /> <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js" /> </Scripts> </telerik:RadScriptManager> <script type="text/javascript"> </script> <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server"> </telerik:RadAjaxManager> <telerik:RadSkinManager ID="RadSkinManager1" runat="server" Skin="Office2007"> </telerik:RadSkinManager> <div style="width: 100%; height: 100%;"> <telerik:RadSplitter ID="RadSplitter1" runat="server" Width="100%" Height="100%" Orientation="Horizontal" VisibleDuringInit="false" BorderSize="0"> <telerik:RadPane ID="RadPane1" runat="server" Height="20" Locked="true"> <span style="vertical-align: middle; font-size: 14px; font-weight: bold; margin: 2px;">Title:</span> </telerik:RadPane> <telerik:RadPane ID="RadPane2" runat="server" Height="100%"> <div style="height: 100%;"> <table> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> <telerik:RadButton ID="CheckBox1" runat="server" ButtonType="ToggleButton" ToggleType="CheckBox" Text="CheckBox1" /> </td> </tr> <tr> <td> <telerik:RadButton ID="CheckBox2" runat="server" ButtonType="ToggleButton" ToggleType="CheckBox" Text="CheckBox2" /> </td> </tr> <tr> <td> <telerik:RadButton ID="CheckBox3" runat="server" ButtonType="ToggleButton" ToggleType="CheckBox" Text="CheckBox3" /> </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> Print Count: <telerik:RadNumericTextBox ID="NumericTextBox1" runat="server" NumberFormat-DecimalDigits="0" MaxValue="99" MinValue="0" Width="50" ShowSpinButtons="false" /> </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> Category: <telerik:RadComboBox ID="ComboBox1" runat="server" Width="200px"> <Items> <telerik:RadComboBoxItem Text="Item 1" /> <telerik:RadComboBoxItem Text="Item 2" /> <telerik:RadComboBoxItem Text="Item 3" /> </Items> </telerik:RadComboBox> </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> <telerik:RadButton ID="RadButton1" runat="server" Text="Button1" /> </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> <tr> <td> .. </td> </tr> </table> </div> </telerik:RadPane> <telerik:RadPane ID="RadPane3" runat="server" Height="30" Locked="true"> <table width="100%"> <tr> <td> <telerik:RadButton ID="RadButton2" runat="server" Text="Button2" AutoPostBack="false" /> <telerik:RadButton ID="RadButton3" runat="server" Text="Button3" AutoPostBack="false" /> </td> <td style="text-align: right"> <telerik:RadButton ID="RadButton4" runat="server" Text="Button4" AutoPostBack="false" /> <telerik:RadButton ID="RadButton5" runat="server" Text="Button5" AutoPostBack="false" /> </td> </tr> </table> </telerik:RadPane> </telerik:RadSplitter> </div> </form> </body> </html> <asp:Panel ID="listViewPanelProductos" CssClass="ListViewList" runat="server"> <telerik:RadListView ID="lvProductos" runat="server" AllowPaging="true" EnableViewState="true" OnItemDataBound="lvProductos_ItemDataBound" ItemPlaceholderID="ProductosContainer" DataKeyNames="IdProducto"> <SortExpressions> <telerik:RadListViewSortExpression FieldName="Orden" SortOrder="Ascending" /> </SortExpressions> <LayoutTemplate> <fieldset id="fieldSet" class="fieldSet"> <asp:PlaceHolder ID="ProductosContainer" runat="server" /> <div style="clear:both"></div> <table cellpadding="0" cellspacing="0" style="margin:auto; padding-top:15px;"> <tr> <td> <telerik:RadDataPager ID="pager" runat="server" PagedControlID="lvProductos" PageSize="10" Skin="Default" AllowSEOPaging="true" SEOPagingQueryPageKey="pag"> <Fields> <telerik:RadDataPagerButtonField FieldType="Prev" /> <telerik:RadDataPagerButtonField FieldType="Numeric" /> <telerik:RadDataPagerButtonField FieldType="Next" /> </Fields> </telerik:RadDataPager> </td> </tr> </table> </fieldset> </LayoutTemplate> <ItemTemplate> <div class="item"> <div class="tituloProducto"> <h2> <asp:HyperLink ID="lnkTitulo" Text='<%# Eval("Titulo") %>' ToolTip='<%# Eval("Titulo") %>' runat="server" EnableViewState="false" /> </h2> </div> <div class="descripcionProducto"> <asp:Label ID="lblDescripcion" runat="server" EnableViewState="false"></asp:Label> </div> </div> </ItemTemplate> . . . . .The Telerik Ajax manager is failing after we upgraded the ajaxcontroltoolik to release 40412.
Below is the error message we get
Error: i.get_postBackElement() is undefined
Source File: http://localhost:4893/ScriptResource.axd?d=enlwfGsN91-xkS94RzKX7sLms2VTblyggVMBXwhOwZLLQAMoCNt4HigDu4pIA3QsY8OWoHMDxSvfEvKNoBf6kbp7KkHLvFdQJs90w2a593xiHJ9ZhDyyYKJ1VxjLiAMQC1JwjF6R6qNrblCmNbNInQ2&t=ffffffffc4b90375
Line: 107
Error: c.get_request()._get_eventHandlerList is not a function
Source File: http://localhost:4893/ScriptResource.axd?d=enlwfGsN91-xkS94RzKX7sLms2VTblyggVMBXwhOwZLLQAMoCNt4HigDu4pIA3QsY8OWoHMDxSvfEvKNoBf6kbp7KkHLvFdQJs90w2a593xiHJ9ZhDyyYKJ1VxjLiAMQC1JwjF6R6qNrblCmNbNInQ2&t=ffffffffc4b90375
Line: 183
screen shots are attached
<telerik:RadTreeList ID="radTreeList" runat="server" AutoGenerateColumns="false" AllowPaging="false" PageSize="5" DataKeyNames="ID" ParentDataKeyNames="ParentTemplateId" OnNeedDataSource="radTreeList_NeedDataSource" Skin="Web20"> <ClientSettings AllowPostBackOnItemClick="false"> <Selecting AllowItemSelection="True" /> <ClientEvents OnItemSelected="itemSelected" /> </ClientSettings> <Columns> <telerik:TreeListBoundColumn DataField="Name" HeaderText="Name" UniqueName="Name" /> <telerik:TreeListBoundColumn DataField="ModifiedTime" HeaderText="ModifiedTime" UniqueName="ModifiedTime" /> <telerik:TreeListCheckBoxColumn UniqueName="chkHasChildren" DataField="HasChildren" HeaderText="HasChildren" /> </Columns> </telerik:RadTreeList>