Hoover Issues

I’m wondering if anyone has an answer to this problem:

I’m trying to make a download area like this;
http://fabi.me/downloads/

However, if you move the mouse over the page that I made, you see that it moves back and forth and is difficult to click. Any idea how I would fix this? http://www.livingwaterreformedchurch.com/intranet/

Thanks

http://ww.wp.xz.cn/extend/plugins/wp-filebase/