function chkBrowser(){
  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;
    }
  }
  if (Browser.Version() < 7 && navigator.appVersion.indexOf("MSIE") != -1) {
	document.getElementById('errorie6').style.display='block';
  }
}