Telerik Open Window and Close From Opened Window

OPEN WINDOW
<script type="text/javascript"> //<
![CDATA[
function OpenWindow(name)
{
var mgr = GetRadWindowManager();
}
//]]> </script>

<button id="btnDeleteCustomer">Open with radopen</button> <radW:RadWindowManager ID="RadWindowManager1" runat="server"> <Windows>
<radW:RadWindow
ID="DeleteCustomer"
NavigateUrl = "DeleteBusiness.aspx"
Skin="Default"
VisibleOnPageLoad = "false"
OpenerElementId = "btnDeleteCustomer"
OffsetElementID = "offsetElement"
Top = "115"
Left = "30"
Width = "700px"
Height = "600px"
runat="server"
/>
</Windows>
</radW:RadWindowManager>


CLOSE FROM OPENED WINDOW
<script type="text/javascript">
function GetRadWindow()
{
var oWindow = null;
if (window.radWindow) oWindow = window.radWindow;
else if (window.frameElement.radWindow) oWindow = window.frameElement.radWindow;

return oWindow;
}

function CloseWindow()
{
var oWindow = GetRadWindow();
oWindow.Close();
}
</script>