İf you want real product image on OnMouseOver you can use this link in products_t.tpl
<a class="thumbnail" href="product.php?productid={$products[product].productid}&cat={$cat}&page={$navigation_p age}"><span><img src="image.php?id={$products[product].productid}&type=P" /></span>{include
file="product_thumbnail.tpl" productid=$products[product].productid image_x=$products[product].tmbn_x|default:$config.Appearance.thumbnail_width image_y=$products[product].tmbn_y
product=$products[product].product tmbn_url=$products[product].tmbn_url}</a>
Merih
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