The IE conditional CSS is overwriting your menu. Please change these lines of code:
<style type="text/css" media="all">
@import url("CSSMenuWriter/cssmw/menu_ie.css");
</style>
to
<!--[if lte IE 6]>
<style type="text/css" media="all">
@import url("CSSMenuWriter/cssmw/menu_ie.css");
</style>