Floated navigation not in correct position

1

I have a floated navigation that won’t sit right.
http://petersweb.strokemymouse.com/it/


<div id="header">
<a href="index.php"><img src="templates/sunset_template/images/logo.gif" /></a>
<div id="nav"><?php mosLoadModules('header');?></div>
</div>



#nav{padding: 4px; margin: 0px; font-family: Verdana, Arial, Helvetica, sans-serif; width:auto; float: right;}
#header {background: url("templates/sunset_template/images/headerbg.gif");}

Any ideas?