<!--
function hilfe(url){
	breite=screen.width;
         links=breite/2-350
         hoehe=screen.height;
         oben=hoehe/2-320;
  	f1 = window.open(url, "hilfe", "width=700,height=640,left="+links+",top="+oben+",scrollbars=yes");
  	f1.focus();
}