You need to look through your JavaScript for areas where strings are declared, assigned or whatever for situation like: "mystr1 or 'mystr2 with no corisponding closing quote.

The code in /scroller/scroll.js looks a little suspect in the way the mix of double and single quotes have been used.

I can also tell you that validating your page with the W3C validation tool results in 22 errors on this page. You shoul fix these. Other pages have similar problems.

You are also using propriatory styling attributes. You should get rid of these and use standards compliant css.

I should add that Firefox does not throw a JavaScript error so the error may being caused by something that only IE executes.