// JavaScript Document
<!--
   var w_popup;

   function popWin(url, width, height) {
      // check for existing popup
      if (! w_popup || w_popup.closed) {
         // set defaults
         if (width == null) width = 680;
         if (height == null) height = 420;
         w_popup = open(url, "popup_window", "directories=0,location=0,menubar=0,resizable=yes,scrollbars=1,status=0,toolbar=1,width=" + width + ",height=" + height + ",left=50,top=20");
         if (! w_popup.opener)
            w_popup.opener = self;
         if (w_popup)
            w_popup.focus();
      } else {
         w_popup.focus();
         w_popup.location = url;
      }
   }
//-->