Hello zornfett,
Your list is not formed correctly.
See if you still have the problem when you make your list look like this -
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<body><div id="content-wrap">
<div id="sidebar">
<div id="nav-2">
<ul>
<li class="first"><a href="#"><span>TKTKTKTK</span></a></li>
<li class="selected"><a href="#"><span>TKTKTKTK</span></a></li>
<li><a href="#"><span>TKTKTKTK</span></a></li>
<li><a href="#"><span>TKTKTKTK</span></a>
<ul>
<li class="first"><a href="#"><span>TKTKTKTK</span></a></li>
<li><a href="#"><span>TKTKTKTK TKTKTKTK TKTKTKTK TKTKTKTK TKTKTKTK</span></a></li>
<li><a href="#"><span>TKTKTKTK</span></a></li>
<li class="last"><a href="#"><span>TKTKTKTK</span></a></li>
</ul>
</li>
<li><a href="#"><span>TKTKTKTK</span></a></li>
<li><a href="#"><span>TKTKTKTK</span></a></li>
<li><a href="#"><span>TKTKTKTK</span></a></li>
<li><a href="#"><span>TKTKTKTK</span></a></li>
<li><a href="#"><span>TKTKTKTK</span></a></li>
<li class="last"><a href="#"><span>TKTKTKTK</span></a></li>
</ul>
<div class="bottom"></div>
</div>
</div>
</div>
</body>
</html>