function windCover(strDoc, fWidth, fHeight)
 { var docWidth = parseInt("0"+fWidth,10);
   var docHeight = parseInt("0"+fHeight,10);
   if (docWidth < 410) docWidth=410; 
   if (docHeight < 301) docHeight=340;
      newWindow = window.open(strDoc,"prodimage","status=no,width=" + docWidth + ",height=" + docHeight + ",top=5px,left=5px,scrollbars=yes,resizable=yes,toolbar=no,menubar=no");
      newWindow.focus();
   isloading=false;
   if (newWindow != null) {return false;} else {return true;}
}