Given the markup below, which is fixed (I can't change the order of elements), I'd like to know if its possible to position the adsense336 box vertically within the .entry box?

Ideally, I'd like to maintain a text wrap around the .adsense336 box, but the most important issue is trying to get it positioned vertically into the .entry area without overlaying the text.

HTML Code:
<div class="content">
	<h1 class="posttitle">Iced Tea</h1>
 	<div class="adsense336 stacked" style="float:left;width:336px">ad block here</div>
	<div class="entry search">Main content block here. I want to float the adsense336 block vertically centered (or a fixed pixel amount down the content block)</div>
</div>