Apple Zen Support Thread

[hrm]

Hi all. I'm using Apple Zen on a new site and I'm having a problem with my background image in the centerColumn on the product_info page. In Firefox, the image shows at the top of the div and in IE it shows at the bottom.

Here's a link
Here's what I have for CSS

.centerColumn {
	background: url('../../../../images/wide_mt_faded.jpg') no-repeat bottom center;

	width:70em;
	height:100%;

	margin:0 auto;

	padding:0;
	padding-bottom: 100px;

	text-align:left;

	line-height:1.6em;

	}

If anybody has got an idea of how to fix this, I'd appreciate it.
Thanks.