var newWin;
function openwin(theURL) { 
 if(newWin != null && !newWin.closed)
      newWin.close();
   newWin = null;
 features="menubar=no,width=405,height=340,left=140,top=60";
 winName="fren";
 // window.open(theURL,winName,features);
 newWin = open(theURL,winName,features);
  }