function winOpen(url, breite, hoehe) {
    			// Errechnet Koordinaten, um das Popup zentriert zu platzieren
        		links = (screen.width/2)-(breite/2);
        		oben = (screen.height/2)-(hoehe/2);
        		window.open(url,"popup","height="+hoehe+",width="+breite+",status = no,toolbar = no,menubar = no,location = no,resizable = no,titlebar = no,scrollbars = no,fullscreen = no,top ="+oben+",left ="+links);
        	}