function openWin(myWin)  
   { 
   myWin= open(myWin, "displayWindow", "width=660,height=600,left=20,top=20,scrollbars=yes,status=no,toolbar=no,menubar=yes,resizable=yes");
   myWin.focus();  
   }

  function rundgang(myWin)  
   { 
   myWin= open(myWin, "displayWindow", "width=780,height=600,left=20,top=20,scrollbars=yes,status=no,toolbar=no,menubar=yes,resizable=yes");
   myWin.focus();  
   }