CSS submenu ie7 trouble

I have problem with a css menu. It is correct on firefox,chrome,opera,s开发者_运维问答afari and ie8. But not on ie7. You can find the menu here. You can see that every li in the submenu is not shown correctly, it breaks below it. How can I fix it? (I hate ie...).

Thanks in advance.

ok..when it's morning you find solutions very fast..Yesterday, for an hour I didn't think to set height on the li and now it was my first thought. Now, if I set ul li ul li{height:20px;} works great!

Thanks to anyone who checked my question & tried to find a solution.