Here's how to put this on a site.

Step 1

Add the following snippet to the <head> of your document:

<!--[if lt IE 9]>
<link rel="stylesheet" type="text/css" href="/sitefiles/getabetterbrowser/css/trigger.css">

Adjust the conditions appropriately. Use &qout;lt" for &qout;less than" and &qout;lte" for &qout;less than or equal to".

Step 2

Add the following ifram just inside the <body> of your document:

<iframe src="" style="display:none;" class="get-a-better-browser"></iframe>

That's it!