I'm not sure why the onMouseOver and onMouseOut are both skipping to the last frame. I tried validating your .css file. It said you're not allowed to change the colours of the scrolbars. But more importantly, is said parse error on this line, and many more:
Code:
#PageLink:Hover       { COLOR: Red;  }       BACKGROUND: Orange;  }
You've closed those curly brackets twice, but only opened them once. This makes the parser not understand what's going on.