GB_myShow = function(caption, url, /* optional */ height, width, callback_fn) {
var options = {
caption: caption,
center_win:true,
height: height || 500,
width: width || 500,
fullscreen: false,
show_loading: true,
callback_fn: callback_fn,
wmode: "tranparent"
}
var win = new GB_Window(options);
return win.show(url);
} 
function norbert (caption, url, /* optional */ height, width) {
	GB_myShow(caption, url, /* optional */ height, width);
}