Set CSS text after style element is added to DOM, to fix crash on IE < 9...

The fix is based on a comment on this page: http://social.msdn.microsoft.com/Forums/en-US/7e081b65-878a-4c22-8e68-c10d39c2ed32/internet-explorer-crashes-appending-style-element-to-head.

I did not write a test for this fix because i was not able to create a basic scenario to reproduce the issue. Also, it only happens on IE 8 (and 7 too i think).