There are some CSS rules on the page that aren't being replaced by whatever templating engine is here.
In page lines:
282 COLOR: {linkcolor};
285 COLOR: {hovercolor};
288 COLOR: {categoryfontcolor};
292 COLOR: {categoryfontcolor};
There are obviously some more that aren't valid, but where you gotta use IE hacks, you gotta use IE hacks.
(The mark forum read button still doesn't work. Don't kill me for mentioning this... bookmark fix: javascript:top.location=top.location+'&do=markread'; )