function checkIE6()
{
// Navigator info
var Browser = {
  Version: function() {
    var version = 999; // we assume a sane browser
    if (navigator.appVersion.indexOf("MSIE") != -1)
      // bah, IE again, lets downgrade version number
      version = parseFloat(navigator.appVersion.split("MSIE")[1]);
    return version;
  }
}
    
//IE6 check
if (Browser.Version() < 7) 
  {
    window.alert("IE6 is not supported, please use safari, firefox, chrome or if desesparate IE7 or IE8.");
  }
else
  { 
    return; 
  }
return;
}