function OpenRadWindow(Url, Wdt, Hgt) {
    var owindow = GetRadWindow();
    var rwindow = null;
    var url = Url;
    rwindow = radopen(url, "");
    rwindow.set_behaviors(Telerik.Web.UI.WindowBehaviors.Close + Telerik.Web.UI.WindowBehaviors.Resize);
    rwindow.setSize(Wdt, Hgt);
    rwindow.center();
}

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 && window.frameElement.radWindow) oWindow = window.frameElement.radWindow; //IE (and Moz az well)
    return oWindow;
}

function CloseWin() {
    GetRadWindow().close();
}