<style type="text/css">

.thumbnail{
position: relative;
z-index: 0;
}

.thumbnail:hover{
background-color: transparent;
z-index: 50;
}

.thumbnail span{ /*CSS for enlarged image*/
position: absolute;
background-color: lightyellow;
padding: 5px;
left: -1000px;
border: 1px dashed gray;
visibility: hidden;
color: black;
text-decoration: none;
}

.thumbnail span img{ /*CSS for enlarged image*/
border-width: 0;
padding: 2px;
}

.thumbnail:hover span{ /*CSS for enlarged image on hover*/
visibility: visible;
top: 0;
left: 60px; /*position where enlarged image should offset horizontally */

}

</style>



<a class="thumbnail" href="#thumb"><img src="http://www.gluck.com.pl/upload/images/2011_07/www.gluck.pl_chicco_auto_fix_fast__212968783.jpg" width="100px" height="66px" border="0" /><span><img src="http://www.gluck.com.pl/upload/images/2011_07/www.gluck.pl_chicco_auto_fix_fast__212968783.jpg" /><br /></span></a>



<a class="thumbnail" href="#thumb"><img src="http://nokautimg1.pl/p-d4-ec-d4ec25be662391fa8406db979f101ee4500x500/wiertarka-aeg-be-600-r.jpg" width="100px" height="66px" border="0" /><span><img src="http://nokautimg1.pl/p-d4-ec-d4ec25be662391fa8406db979f101ee4500x500/wiertarka-aeg-be-600-r.jpg" /><br />So real, it's unreal. Or is it?</span></a>