#leftcolumn{
float:left;
width:150px;
height: 400px;
border: 3px solid black;
padding: 5px;
padding-left: 8px;

}

#leftcolumn a{
padding: 3px 1px;
display: block;
width: 100%;
text-decoration: none;
font-weight: bold;
border-bottom: 1px solid gray;
}

#leftcolumn a:hover{
background-color: #FFFF80;
}

#rightcolumn{
float:left;
width:550px;
min-height: 200px;
margin-left: 10px;
padding: 5px;
padding-bottom: 8px;
}

* html #rightcolumn{ /*IE only style*/
height: 400px;
}
.thumbnail{
position: relative;
z-index: 0;
}

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

.thumbnail span{ /*CSS for enlarged image*/
position: fixed;
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;
width:500px;
height:190px;
top: 150px;
left: 80px; /*position where enlarged image should offset horizontally */
}