There is some potentially bad style info.
First, find this line of code
<div id="IWS_WH_Elem_Content" class="MSC_Body" style="width: 577px; height:
923px">
See the height:923px? try removing that. what it is saying is to make this
area 923 pixels high. Opera and IE are smarter and try to extend the area
further, but Mozilla is adhering to it as a strict height and thus it's
getting cutoff.
Hope this helps,
Mark Fitzpatrick
Microsoft MVP - Expression