Javascript Expand Function Error - IE8

I’m having a peculiar problem with some JavaScript on my website that I cannot seem to figure out and fix. The problem stems from Internet Explorer’s inability to expand questions in the FAQ section of my website ( link: ). Of course the expand function works in Firefox and Safari.

The <script type=“text/javascript” src=“js/faq.js”></script> in the source
refers to:

	$("dl.faq dt")
		.append("<br /><a href='#' title='Reveal Answer' class='answer-tab'>Answer</a>");
            return false;

Any help would be greatly appreciated!

Does anyone know of an extend all code I could use?