or

<%@ Control Language="VB" AutoEventWireup="false" CodeFile="RadWindowManager.ascx.vb" Inherits="Controls_RadWindowManager" %> <%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %> <telerik:RadWindowManager runat="server" RestrictionZoneID="offsetElement" EnableShadow="true" ShowOnTopWhenMaximized="false" VisibleStatusbar="false" Behaviors="Close, Move, Resize, Maximize" Opacity="99" Height="400" Width="400" > </telerik:RadWindowManager> <script type="text/javascript"> function OpenRadWindow(url, title, width, height, modal, onBeforeCloseEvent, onCloseEvent) { if (url == null) { url = "" } if (title == null) { title = "" } if (width == null) { width = 400 } if (height == null) { height = 400 } if (modal == null) { modal = true } var wnd = window.radopen(url, null); wnd.SetTitle(title); wnd.setSize(width, height); wnd.set_modal(modal); if (onBeforeCloseEvent != null) { wnd.add_beforeClose(onBeforeCloseEvent); } if (onCloseEvent != null) { wnd.add_onClose(onCloseEvent); } return false; } </script>
<%@ Register Src="~/Controls/RadWindowManager.ascx" TagName="RadWindowManager" TagPrefix="uc3" %>
<uc3:RadWindowManager ID="RadWindowManager" runat="server" />
function OpenAddProduct() { var url = <%= """" & ResolveUrl("~/Levels/Products.Aspx?Popup=1") & """" %>; OpenRadWindow(url, "Manage Products", 765, 500, true, null, alert("This is supposed to be a close event...")); }

<telerik:RadWindow runat="server" SkinID="AddPersonNoteWindow" IconUrl="Images/Icons/note_add.png" />background-image: url("//App_Themes/Default/Images/Icons/note_add.png")