.thumbnail{
position: relative;
z-index: 500;
}

.thumbnail:hover{
background-color: transparent;
z-index: 501;
}

.thumbnail span{ /*CSS for enlarged image*/
position: absolute;
left: -1000px;
border:4px solid #000000;background:#FFFFFF;padding:1px;
visibility: hidden;
color: black;
text-decoration: none;
width:305px;
height:auto;
}

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

.thumbnail:hover span{ /*CSS for enlarged image on hover*/
visibility: visible;

left: -20px; /*position where enlarged image should offset horizontally */
bottom:70px;
}


.thumbnail2{
position: relative;
z-index: 500;
}

.thumbnail2:hover{
background-color: transparent;
z-index: 501;
}

.thumbnail2 span{ /*CSS for enlarged image*/
position: absolute;
left: -1000px;
border:4px solid #000000;background:#FFFFFF;padding:1px;
visibility: hidden;
color: black;
text-decoration: none;
width:305px;
height:auto;
}

.thumbnail2 span img{ /*CSS for enlarged image*/
border-width: 0;
padding: 2px;}

.thumbnail2:hover span{ /*CSS for enlarged image on hover*/
visibility: visible;z-index: 502;

left: 80px; /*position where enlarged image should offset horizontally */
bottom:0px;
}