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

function openRadWindow(url, width, height)
{
    var wnd = window.radopen(url, null);
    
    if (width != null && !isNaN(width))
        wnd.set_width(width);
    
    if (height != null && !isNaN(height))
        wnd.set_height(height);
    
    wnd.center();
}