Hallo!
Code:
<div id="navigation">
<ul id="nav">
<div id="menuaktiv"><a href="index.php">HOME</a></div>
<!-- Menü -->
<div id="menu"><a href="index.php?site=downloads">DOWNLOADS</a></div>
<div id="menu"><a href="index.php?site=tutorials">TUTORIALS</a></div>
<div id="menu"><a href="index.php?site=extras">EXTRAS</a></div>
<div id="menu"><a href="index.php?site=forum">FORUM</a></div>
</ul>
<p style="right: 25px; top: 32px;">Photoshophelp.de <span>Photoshophelp.de</span></p>
<p style="right: 25px; top: 52px; font-size:13px;">...<b>Willkommen</b></p>
</div>
Eine Liste <ul> muss <li> enthalten - nicht <div>.