Hi Dacker,
I'm looking to figure out the same thing. I looked at your code, specifically this part,
<div id="rtBottomContent">
<p class="RMbottom">
<select>
<option>16 oz. Hair Moisturizer</option>
<option>32 oz Hair Moisturizer</option>
<option>Gallon Hair Moisturizer</option>
<option>5 Gallon Hair Moisturizer</option>
</select>
<form name="LBI_1_ATC_7.95" method="POST" action="/Dealers/hairMoist.php">
<input type="hidden" name="LBI_1_ID_Add" value="7.95" >
<input type="hidden" name="LBI_1_Description_Add" value="16 oz. Hair Moisturizer" >
<input type="hidden" name="LBI_1_Weight_Add" value="1.1" >
<input type="hidden" name="LBI_1_Quantity_Add" value="6" >
<input type="hidden" name="LBI_1_Price_Add" value="7.95" >
<input type="image" src="images/button.jpg" align="right" border="0" value="Add to Cart" name="LBI_1_ATC">
</form>
</p>
</div>
You can see there how your add to cart button is only setup for the 16 oz. bottle. Somehow, when the user selects a different product that needs to change to reflect the change but it doesn't. I know that's probably not much help, but maybe it's a starting point for where to investigate. I'm very new to this to, so sorry I can't provide more insight.