IE8's Compatibility Mode.
Web page coders can force Internet Explorer 8 to use the IE7 rendering engine. To do so, add this meta tag inside the head of the page:
<meta http-equiv="X-UA-Compatible" content="IE=7">
You can also force IE8 to render using it's own engine; essentially forcing IE8 into standards mode. Here's the code, which also goes into the page head:
<meta http-equiv="X-UA-Compatible" content="IE=8" />
Users can override the rendering mode by changing the Compatibility View settings IE8's Page menu.
Tags: code html