or
<body> <form id="form1" runat="server"> <div> <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager> <table> <tr> <td><telerik:RadDatePicker ID="RadDatePicker1" runat="server" Width="100" Skin="CKCRadSkin" EnableEmbeddedBaseStylesheet="false" EnableEmbeddedSkins="false"></telerik:RadDatePicker></td> <td><telerik:RadDatePicker ID="RadDatePicker2" runat="server" Width="100" Skin="CKCRadSkin" EnableEmbeddedBaseStylesheet="false" EnableEmbeddedSkins="false"></telerik:RadDatePicker></td> <td><telerik:RadDatePicker ID="RadDatePicker3" runat="server" Width="100" Skin="CKCRadSkin" EnableEmbeddedBaseStylesheet="false" EnableEmbeddedSkins="false"></telerik:RadDatePicker></td> <td><telerik:RadDatePicker ID="RadDatePicker4" runat="server" Width="100" Skin="CKCRadSkin" EnableEmbeddedBaseStylesheet="false" EnableEmbeddedSkins="false"></telerik:RadDatePicker></td> </tr> </table> </div> </form></body><body> <form id="form1" runat="server"> <div> <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager> <table> <tr> <td><telerik:RadDatePicker ID="RadDatePicker1" runat="server" Width="100" Skin="CKCRadSkin" EnableEmbeddedBaseStylesheet="false" EnableEmbeddedSkins="false"></telerik:RadDatePicker></td> <td><telerik:RadDatePicker ID="RadDatePicker2" runat="server" Width="100"></telerik:RadDatePicker></td> <td><telerik:RadDatePicker ID="RadDatePicker3" runat="server" Width="100" Skin="CKCRadSkin" EnableEmbeddedBaseStylesheet="false" EnableEmbeddedSkins="false"></telerik:RadDatePicker></td> <td><telerik:RadDatePicker ID="RadDatePicker4" runat="server" Width="100" Skin="CKCRadSkin" EnableEmbeddedBaseStylesheet="false" EnableEmbeddedSkins="false"></telerik:RadDatePicker></td> </tr> </table> </div> </form></body>

<telerik:RadWindowManager ID="RadWindowManager1" VisibleStatusbar="false" runat="server" Modal="True" Visible="False"> <Windows> <telerik:RadWindow ID="RadWindow1" runat="server" style="display:none;" VisibleOnPageLoad="true" NavigateUrl="PopUp_PDFParameters.aspx" OnClientShow="UseRadWindow"> </telerik:RadWindow> </Windows> </telerik:RadWindowManager> I have found that when we set the RadWindow’s property (VisibleTitlebar="false”) the issues gets solved.
This is working fine in IE 6,7 and 8 .
Let me know what can be the issue.
<script language ="javascript" type ="text/javascript" > function GetRadWindow() { var oWindow = null; if (window.radWindow) oWindow = window.RadWindow; //Will work in Moz in all cases, including clasic dialog else if (window.frameElement.radWindow) oWindow = window.frameElement.radWindow;//IE (and Moz as well) return oWindow; } function opwn_window_2() { var oBrowserWnd = GetRadWindow().BrowserWindow; oBrowserWnd.radopen("http://www.google.com", "RadWindow2"); } </script>