as greg said, its an issue with that <div id="ctrdiv">, take a look to the "position" atribute, it is in absolute right now, so it is like covering nabble forum.
for example, it will work if you set it to "static":
<div id="ctrdiv" style="position:static; top:0; padding: 0px; height:100%; width: 947px">
But keep trying and see which position suits to you(also because the header image will be moved to left with "static".
:) Helper