Get floating div to vertical align - html

Question

Here's the challenge I'm facing. I'm trying to get a div to appear behind another object and to center align to it.
This is what I'm up to so far: http://jsfiddle.net/imoda/GYha2/
And this is the result I'm trying to get
As you can see, I'm close. I just can't get it to align center and to position itself behind the other object.
Any thoughts?
HTML:
<div id="banner" class="grid_12">
<div class="bannerBgT"></div>
<div class="bannerBgY">
<div id="planPricingWrapper">
<div id="planPrices">
<div class="planPrice">
<div class="planPriceX"> </div>
<div class="planPriceR"></div>
<div class="clear"></div>
</div>
<div class="clear_10px"></div>
<div class="planPrice">
<div class="planPriceX"> </div>
<div class="planPriceR"></div>
<div class="clear"></div>
</div>
</div>
<div id="planPriceOptions">
<div class="planPriceOptionsBgT" id="supremacy"></div>
<div class="planPriceOptionsBgY" id="supremacy">
<div><img src="http://www.patientacquisitionsystem.com/images/plans/pricing_title_supremacy.png" width="183" height="27" alt="Supremacy" id="titleImg" /></div>
<img src="http://www.patientacquisitionsystem.com/images/plans/pricing_plan_supremacy.png" width="146" height="156" alt="" />
<div class="planFeatures"> <b>Includes Gold & Platinum Features Plus:</b>
<ul>
<li>Class 3 Rayhawk Design</li>
<li>Class 3 Content Management</li>
<li>Up to 6 Content Modules</li>
<li>Inclusion in 2 or more directories/portals</li>
<li>Access to Rayhawk brand management services*</li>
<li>Mobile device enabled educational content/videos</li>
<li>Marketing materials deployment system*^</li>
<li>2 hours per month of additional services</li>
</ul>
</div>
</div>
<div class="planPriceOptionsBgB" id="supremacy"></div>
</div>
</div>
<div class="clear"></div>
</div>
<div class="bannerBgB"></div>
</div>
CSS:
#planPricingWrapper {
padding: 20px;
}
#planPrices {
float: right;
}
#planPrices * {
z-index: 1;
}
.planPrice > * {
float: left;
}
.planPriceX {
width: 280px;
height: 131px;
background: url(http://www.patientacquisitionsystem.com/images/plans/pricing_bg_x.png) repeat-x;
}
.planPriceR {
width: 11px;
height: 131px;
background: url(http://www.patientacquisitionsystem.com/images/plans/pricing_bg_r.png) no-repeat;
}
#planPriceOptions {
z-index: 9999999;
}
.planPriceOptionsBgT, .planPriceOptionsBgB {
width: 614px;
}
.planPriceOptionsBgT#supremacy, .planPriceOptionsBgY#supremacy, .planPriceOptionsBgB#supremacy {
background-color: #181818;
}
.planPriceOptionsBgT {
height: 10px;
background: url(http://www.patientacquisitionsystem.com/images/plans/pricing_plan_bg_t.png) no-repeat;
}
.planPriceOptionsBgY {
background: url(http://www.patientacquisitionsystem.com/images/plans/pricing_plan_bg_y.png) repeat-y;
color: #FFF;
text-align: center;
padding: 20px;
width: 574px;
min-height: 250px;
}
.planPriceOptionsBgY #titleImg {
margin-bottom: 10px;
}
.planPriceOptionsBgB {
height: 12px;
background: url(http://www.patientacquisitionsystem.com/images/plans/pricing_plan_bg_b.png) no-repeat;
}
.planFeatures {
display: inline-block;
vertical-align: top;
font-size: 14px;
text-align: left;
list-style: square;
margin-left: 10px;
}
.planFeatures ul {
list-style: square;
}

Answer 1

There are basically two ways to do vertically aligning:
Use tables (using either real HTML <table> tags or fake CSS display:table-cell declarations)
Use inline elements (again, either real HTML elements that are naturally inline, like <span>, or CSS display:inline-block declarations)
Here's an updated fiddle that uses display:inline-block to approximately get what you're after, I think. Notice that I also flipped around the two divs in the HTML.
It also uses the *display:inline; zoom:1; hack to make it work with IE6/7