or
<link href="css/MySkin/Button.MySkin.css" rel="stylesheet" type="text/css" />

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Popup.aspx.vb" Inherits="Admin_AccountingManagement_Popup" %><!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"><head id="Head1" runat="server"> <title></title> </head><body> <form id="form1" runat="server" > <div style="vertical-align: middle"> <table align="center"> <tr> <td align="center"> <asp:Image ID="ImageWait" runat="server" ImageAlign="Middle" ImageUrl="~/Admin/images/ajax-loader.gif" /> </td> <td> <div id = "LabelConn" style="display: none" align="center"> No Service connection </div> </td> </tr> <tr> <td> <asp:Label ID="LabelConnecting" runat="server" Text="Connecting...." Font-Size="X-Large"></asp:Label> </td> <td align="center"> <input id="Button1" type="button" value="Close" onclick="Close()" style="display: none"/> </td> </tr> </table> </div> </form></body></html><telerik:RadWindow runat="server" Width="300" Height="150" VisibleStatusbar="false" ID="AddWindow" Modal="true" KeepInScreenBounds="true" Behaviors="Default" Skin="Vista" ReloadOnShow="True" VisibleTitlebar="false" VisibleOnPageLoad="False" ShowContentDuringLoad="True"></telerik:RadWindow>function Pop() { var wnd = $find("<%=AddWindow.ClientID%>"); wnd.show(); //wnd.setUrl("/Admin/Mailing/OpenRooms.aspx?IDMailing=" + IDMailing + "&SupplierID=" + IDSupplier); wnd.setUrl("/Admin/AccountingManagement/Popup.aspx"); }