BODY{ scrollbar-3dlight-color:#00000; 
scrollbar-arrow-color:green; 
scrollbar-base-color:gray; 
scrollbar-darkshadow-color:black; 
scrollbar-face-color:black; 
scrollbar-highlight-color:#ffffff; 
scrollbar-shadow-color:silver; 
}

A:link {
	text-decoration: none;
	font-family: Trebuchet MS, Arial, Helvetica, sans-serif;
	font-size: 15px;
	color: #0033FF;
}

A:visited {
	text-decoration: none;
	font-family: Trebuchet MS, Arial, Helvetica, sans-serif;
	font-size: 15px;
	color: #0033FF;
}

A:active {
	text-decoration: none;
	font-family: Trebuchet MS, Arial, Helvetica, sans-serif;
	font-size: 15px;
	color: #0033FF;
}

A:hover {
	text-decoration: none;
	font-family: Trebuchet MS, Arial, Helvetica, sans-serif;
	font-size: 15px;
	color: #0099ff;
}

<style type="text/css">

.thumbnail{
position: relative;
z-index: 1;
}

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

.thumbnail span{ /*CSS for enlarged image*/
position: absolute;
background-color: lightblue;
padding: 5px;
left: -1000px;
border: 0px 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: 0px; /*position where enlarged image should offset horizontally */

}

</style>