if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ //Check if browser is Internet Explorer;
 var browserVersion=new Number(RegExp.$1) // capture x.x portion and store as a number

  var browser = ("")
 if (browserVersion>=8)
  browser = ("IE8")//if browser is IE8 set var browser to IE8
 else if (browserVersion>=7)
  browser = ("IE7")//if browser is IE7 set var browser to IE7
 else if (browserVersion>=6)
  browser = ("IE6")//if browser is IE6 set var browser to IE6
 else if (browserVersion>=5)
  browser =("IE5")//if browser is IE5 set var browser to IE5
if (browser== "IE6"|| browser== "IE5")
window.location=("get_new_browser.html")//Redirect to the page with a link for a newer version of IE
//document.write(browser)

}