private static VirtualPath GetDiskResourcePath(string resourceName)
        {
            VirtualPath clientScriptsLocation = Util.GetScriptLocation();
            VirtualPath resourceVirtualPath   = clientScriptsLocation.SimpleCombine(resourceName);
            string      resourcePhysicalPath  = resourceVirtualPath.MapPath();

            if (File.Exists(resourcePhysicalPath))
            {
                return(resourceVirtualPath);
            }
            else
            {
                return(null);
            }
        }