  <!--//
    var currentUrl;
    function openWin(url){
      
      if ((window.top.popup == null) || (window.top.popup.closed) || ( currentUrl != url))
      {
         if ( currentUrl != url && window.top.popup != null )
         {
            window.top.popup.close();
         }
         var xMax = screen.availWidth, yMax = screen.availHeight;
         var xOffset = (xMax - 100)/4, yOffset = (yMax - 100)/4;
         var popWin=window.open(url,"popWin","WIDTH=550,HEIGHT=450,SCROLLBARS,screenX=" + xOffset + ",screenY=" + yOffset + ",top=" + yOffset + ",left=" + xOffset);
         window.top.popup = popWin;
         currentUrl = url;
//         popWin.focus();
//         window.top.popup.focus();
      }  
      else
      {
         window.top.popup.focus();
      }
   }
//-->