I finally got around to fixing the text selection for the site. Whenever you use absolute positioning in CSS, Internet Explorer pukes and won't let you select any text.

Apparently the problem can be fixed by adding a tiny bit of javascript to the very bottom of the page.

<script language="javascript" type="text/javascript">
<!--
document.body.style.height = document.documentElement.scrollHeight 'px';
-->
</script>

The solution was found here.