Problem in IE Windows Vista

Edit: Can someone running a Windows Vista machine check the link and give some feedback please?

Hi guys,

This site shows some errors only in IE Windows Vista. The "bottom" and "footer" div's somehow gets above main content.

Maybe i miss something in those div's? Maybe a simple "display" can fix it?

There's a live link down this post.

Here's the css code:

#bottom {
width: 910px;
height: 150px;
margin-left: 51px;
margin-bottom: 10px;
}

#footer {
width: 890px;
height: 40px;
margin-left: 51px;
text-align: center;
padding: 20px 0px 0px 0px;
margin-bottom: 10px;
color: #676767;
font-size: 11px;
background-image: url(images/footer.jpg);
}


and here's a live example of it

Thanks in advance!