var samplex = Math.round(screen.width *.02);
   var sampley = Math.round(screen.height*.02);
   function showsample(sample,samplewidth,sampleheight)
   {
	window.open(sample, "", "toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,copyhistory=no,width=" + samplewidth + ",height=" + sampleheight + ",screenX=" + samplex + ",screenY=" + sampley + ",left=" + samplex + ",top=" + sampley);

   }