<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: #FFFFDD;
						padding: 5px; left: -1000px; border: 1px solid green; visibility: hidden;
						color: #990000; text-decoration: none;								}

.thumbnail span img		{ /*CSS for enlarged image*/											}

.thumbnail:hover span	{ /*CSS for enlarged image on hover*/ visibility: visible; top: 100; left: 5%;
						/*position where enlarged image should offset horizontally */			}

</style>