Move the div for add to cart just before the closing of the productMainImage div.
Code:
<div id="productMainImage" class="centeredContent back">
<script language="javascript" type="text/javascript">&lt;!--
document.write('&lt;a href="javascript:popupWindow(\'http://shop.judithstilesdesigns.com/index.php?main_page=popup_image&amp;amp;pID=23\')"&gt;&lt;img src="images/OKLchelseapersimmon.jpg" alt="Persimmon Table Lamp" title=" Persimmon Table Lamp " width="304" height="600" /&gt;&lt;br /&gt;&lt;span class="imgLink"&gt;view larger image&lt;/span&gt;&lt;/a&gt;');
//--&gt;</script><a href="javascript:popupWindow('http://shop.judithstilesdesigns.com/index.php?main_page=popup_image&pID=23')"><img height="600" width="304" src="images/OKLchelseapersimmon.jpg" alt="Persimmon Table Lamp" title=" Persimmon Table Lamp "><br><span class="imgLink">view larger image</span></a>
<noscript>
&lt;a href="http://shop.judithstilesdesigns.com/index.php?main_page=popup_image&amp;amp;pID=23" target="_blank"&gt;&lt;img src="images/OKLchelseapersimmon.jpg" alt="Persimmon Table Lamp" title=" Persimmon Table Lamp " width="304" height="600" /&gt;&lt;br /&gt;&lt;span class="imgLink"&gt;view larger image&lt;/span&gt;&lt;/a&gt;</noscript><div id="cartAdd">
Add to Cart: <input type="text" name="cart_quantity" value="1" maxlength="6" size="4"><br><br><input type="hidden" name="products_id" value="23"><input type="image" src="includes/templates/freetemplate1/buttons/english/button_in_cart.gif" alt="Add to Cart" title=" Add to Cart "> </div>
</div>