**
**
Revise your HTML as follows:
<div class="product-main">
<div id="img-container" class="img-container">
<div class="feature-product-img" id="feature-product-img" style="display: block;">
<a href="http://www.spinnakerextreme.com/2012-tt-isle-of-man-official-review-blu-ray-and-dvd.html" title="2012 TT Isle of Man Official Review Blu Ray and DVD">
<img class="product-img" src="http://www.spinnakerextreme.com/media/catalog/product/p/r/product_2_bg.png" alt="2012 TT Isle of Man Official Review Blu Ray and DVD" />
</a>
****move this inside the feature-product div****
<div class="main-img" id="main-img">
<a href="http://www.spinnakerextreme.com/2012-tt-isle-of-man-official-review-blu-ray-and-dvd.html" title="2012 TT Isle of Man Official Review Blu Ray and DVD">
<img src="http://www.spinnakerextreme.com/media/catalog/product/cache/1/small_image/9df78eab33525d08d6e5fb8d27136e95/t/t/tt_man_review_1.png" height="184" id="main-image-img"/>
</a>
************
</div>
</div>
<div class="product-description">
<a href="http://www.spinnakerextreme.com/2012-tt-isle-of-man-official-review-blu-ray-and-dvd.html" title="2012 TT Isle of Man Official Review Blu Ray and DVD">
2012 TT Isle of Man Official Review Blu Ray and DVD
</a>
</div>
Update the css to:
.feature-product-img:hover > .main-img{
display:block;
}
.feature-product-img .main-img:active {
display:block;
}