function detectBrowser()
{
var browser=navigator.appName;
var b_version=navigator.appVersion;
var version=parseFloat(b_version);
if ((browser=="Microsoft Internet Explorer")
  && (version>=4))
  {
  window.location="http://www.cmlsustain.com/ashtonlodge/ie/home.asp";
  }
else
  {
  alert("It's time to upgrade your browser!");
  }
}