/*left*/
.thumb_left{
position: relative;
z-index: 0;
}

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

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

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

.thumb_left:hover span{ /*CSS for enlarged image on hover*/
visibility: visible;
top: -150;
left: 230px; /*position where enlarged image should offset horizontally */
}

/*centre*/
.thumb_centre{
position: relative;
z-index: 0;
}

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

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

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

.thumb_centre:hover span{ /*CSS for enlarged image on hover*/
visibility: visible;
top: 50;
left: -120px; /*position where enlarged image should offset horizontally */
}

/*right*/
.thumb_right{
position: relative;
z-index: 0;
}

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

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

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

.thumb_right:hover span{ /*CSS for enlarged image on hover*/
visibility: visible;
top: -150;
left: -470px; /*position where enlarged image should offset horizontally */
}