function OpenNewPageWindow(oButton, url, windowName) {
    var oWnd = window.radopen(url, windowName);
    oWnd.SetModal(true);
    oWnd.SetSize(760, 550);
}



function OnClientItemClicking(sender, eventArgs) {
    var item = eventArgs.get_item();
    if (item.get_expanded() == true) {
        item.collapse();
        eventArgs.set_cancel(true);
    }
    else {
        item.expand();
    }
}