Compatibility Issues With Internet Explorer 8

I am facing a problem with this site www.airmaster.dk. In IE 8 the java script is not rendering correctly as it suppose to and I cant figure out why it is happening. It's rendering

Solution 1:

This is because HTML5 tages like header and footer does not support on IE8 or below.

You should use 3rdparty library such as html5shiv to render HTML5 tags correctly.

Solution 2:

IE just show you DOM node properties added by javascript. jQuery1830605484465614684 is just the jQuery UID for inner usage.

ADD:

Your stylesheets not applied. May be its have syntax error or to many selectors.