function popup(url, title, width, height) {
	var breite = screen.width;
	var hoehe = screen.height;
	var xps = ((breite/2)-379)
	var yps = ((hoehe/2)-209) 
	fenster = window.open(url, "Nighthawks Player", "width="+width+",height="+height+",resizable=yes,left="+xps+"top="+yps);
	fenster.focus();
	return false;
}