IE

To make the Internet Explorer HTML5-competitive it is advisable to install Google Chrome Frame. JavaScript allows to discover whether Google Chrome Frame is already installed.

if(navigator.appName == 'Microsoft Internet Explorer'){
  var hasChromeFrame = navigator.userAgent.match(/(chromeframe)/);
  if(hasChromeFrame == null){
    window.location = 'http://www.google.com/chromeframe';
  }
}

Another option is to use some Google stuff. But then the dialog to install Chrome Frame (CF) is only shown once per session:

<!--[if IE]>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/chrome-frame/1/CFInstall.min.js"></script>
<script type="text/javascript">
  // Check if Chrome Frame is installed and display an overlay if not
  CFInstall.check({
    mode: "overlay"
  });
</script>
<![endif]-->

Schlagwort: IE

Detect Internet Explorer and Google Chrome Frame with JavaScript

Mehrere IE gleichzeitig installieren