function ImageOpen (url,breite,hoehe,options){
	if( !breite && !hoehe ) {
		Fenster = window.open(url,"Zweitfenster","Width=10,Height=10,Status=no,"+options);
	} else {
		Fenster = window.open(url,"Zweitfenster","Width="+breite+",Height="+hoehe+",Status=no,"+options);
	}
	Fenster.innerWidth = breite;
	Fenster.innerHeight = hoehe;
	Fenster.focus();
}