Images won't display in IE, fine on FF, Safari

[eps81]

Good morning,

I'm trying to revamp my website but am having issues with two thumbnails not loading in IE (they are fine in Safar and FF). Any idea as to what might be causing it? I can't seem to fix it. Any suggestions would be greatly appreciated!

URL: www.rousecreative.com

Can supply code if needed.

[eps81]

<div class="graphics"><a href="Images/portshowPOSTER.jpg" rel="lightbox" title="2009 TTC Portfolio Show" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage('Image23','','Images/portshowPOSTER_thumb_dark.jpg',1)"><img src="Images/portshowPOSTER_thumb.jpg" name="Image23" width="100" height="100" border="0" id="Image23" /></a>