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function setupcss()

{

   var csshref = 'brighid.css';



   var re = /MSIE (\d+)/;



   if (re)

   {

      var user_agent_string = navigator.userAgent;



      //alert(user_agent_string);



      var data = re.exec(user_agent_string);



      if (data)

      {

         var msie_version = parseInt(data[1]);



         //alert('DETECTED MSIE VERSION = [' + msie_version + ']');



         if (msie_version < 7) {

            csshref = 'ie6.css'; // browsers before version 7

         } else {

            csshref = 'ie7.css';       // browsers after version 6

         }

      }

   }   



   var csstag = '<link rel="stylesheet" type="text/css" href="' + csshref + '">';



   <!--alert(csstag);-->



   document.write(csstag);

}



setupcss();