ul.thumb {
float: left;
list-style: none;
margin: 0; padding: 5px;
text-align:center;
width: 100px;
}
ul.thumb li {
margin: 5px; padding: 5px;
float: left;
position: relative;  /* Set the absolute positioning base coordinate */
width: 100px;
height: 100px;
}
ul.thumb li img {
width: 80px; height: 80px; /* Set the small thumbnail size */
-ms-interpolation-mode: bicubic; /* IE Fix for Bicubic Scaling */
border: 1px solid #ddd;
padding: 5px;
background: #f0f0f0;
position: absolute;
left: 0; top: 0;
}
ul.thumb li img .hover {
background:url(../images/thumb_bg.png) no-repeat center center;  /* Image used as background on hover effect
border: none; /* Get rid of border on hover */
}