No of course not. You have a floating design and when I look at your site now, I see a big smiling image to the right.
It doesn't fit in my fairly large browser window and it pushes the main content area over your left sidebar.
When I resize my window to something smaller, the smiling guy disappears behind the main content.
I can still not click on any links to the left.
In MSIE, when resizing, the guy is creeping under and the left sidebar covers some of the main content. The links are clickable.
Don't give up though. It is a clean, nice and funny design and you should take a deep breath, get some coffee or whatever you fancy and then start over.
Get both browsers to test with, and try to get the different parts of your design not to overlap. This is done by tuning your Stylesheet.
The dead links in Firefox may be caused by the overlapping problem. If one transparent ( invisible ) part of the main content overlaps the links, it is no longer possible to activate them.
If you have Internet Explorer, get Firefox now, and vv.