<div class="header">
<div class="tab">
<ul class="login">
<li class="left">&nbsp;</li>
<!-- ID searchBox-->
<div id="searchBox">
<li>
<span class="Search_l"></span>
<form class="searchform">
<a class="Search_r" id="open"></a>
<div id="panel">
-----код-------
</div>
</form>
</li>
</div> <!-- /ID searchBox-->
<li class="right">&nbsp;</li>
</ul> 
</div> <!-- / tab -->
</div> <!-- / header -->