Empty white space after footer

I am working on this site and on the bottom of the page there is a empty white space that just wont go away. I went to several validator sites to check but that white space still shows up. HELP! :eek:

Heres the URL to the page: http://www.wguanxi.com/test.php

If you scroll to the bottom you'll see that after the footer there is a empty white space.

Help and thank you !

:eek:

Your CSS has a 300px height on the footer

.footer {
background-color: #171717;
width: 100%;
height: 300px;

/* in common.css */
body {
font-family: "lucida grande",tahoma,verdana,arial,sans-serif;
font-size: 11px;
color: #333333;
background-color:#ffffff;
margin:0px;
padding:0 0 50px 0;
}

You do know that padding adds space, right?