#big { 
clear: both;	
margin: 20px auto;
padding: 0;
text-align: center; 
width: auto;  
position: relative;
}

#big img {
margin: 0;
padding: 0;
text-align: center; 
border: 1px solid #999;   
cursor: pointer; 
float: none;
}

#thumb_list {text-align: center; display: block; width: 600px; margin: 20px auto;}

#thumb_list img {
width: 80px;
height: 60px;
margin: 0 4px 3px 4px;
border: 1px solid #999;         
cursor: pointer;  
float: none;  
}
    
.previous {float: left;}
.next {float: right;}   
.previous,.next {width: 60px; font: bold 11px arial; text-transform: uppercase; padding: 3px 0; color: #ccc; cursor: pointer;}