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)
                document.write('<LINK REL="StyleSheet" HREF="style-ie.css" TYPE="text/css">') //  document.write("You're using IE8 or above")
 else if (ieversion>=7)
                document.write('<LINK REL="StyleSheet" HREF="style-ie.css" TYPE="text/css">') //  document.write("You're using IE7.x")
 else if (ieversion>=6)
                document.write('<LINK REL="StyleSheet" HREF="style-ie6.css" TYPE="text/css">') //  document.write("You're using IE6.x")
 else if (ieversion>=5)
                document.write('<LINK REL="StyleSheet" HREF="style-ie6.css" TYPE="text/css">') //  document.write("You're using IE5.x")
}
else
        document.write('<LINK REL="StyleSheet" HREF="style.css" TYPE="text/css">') // document.write("n/a")