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