JQuery UI Accordion Icon not in te middle

Question

Hi Everyone, I am using Jquery ui 1.8 and I am inserting an image in the header section of the accordion, images shows up correctly but the icon (arrow) is not shown in the middle of the header. How can I put it in the middle?

<div id="accordion" style="margin:15px;">
<div class="header"><img src="images/logos/RBI_Trax_full_tiny.png" alt="RBI Trax" style="padding-left:15px;padding-bottom: 10px;"/></div>
<div>
<div class="accordion_content">
<p>Trax Info.</p>
</div>
</div>