Quick mod to add thumbnail tooltips to next/previous product links...
skin/reboot/custom/product_next_prev.tpl
Replace entire code with...
Code:
{if $prev.productid || $next.productid}
<ul class="pager">
<li class="previous"><a class="ttip_n" title="<img src='image.php?type=T&id={$prev.productid}' style='height:75px' alt='{$prev.product}'>" href="product.php?productid={$prev.productid}"><i class="icon-angle-left"></i> {$prev.product}</a></li>
<li class="next"><a class="ttip_n" title="<img src='image.php?type=T&id={$next.productid}' style='height:75px' alt='{$next.product}'>" href="product.php?productid={$next.productid}">{$next.product} <i class="icon-angle-right"></i></a></li>
</ul>
{/if}