if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ //test for MSIE x.x;
          var ieversion=new Number(RegExp.$1) // capture x.x portion and store as a number
          if (ieversion>=8)
            ;
          else if (ieversion>=7)
            document.write('<link rel="stylesheet" href="includes/ie.css" type="text/css">')
          else if (ieversion>=6)
            document.write('<link rel="stylesheet" href="includes/ie.6.x.css" type="text/css">')
          else if (ieversion>=5)
            ;
	}