.transparent  
{  
    filter:alpha(opacity=70);   
    -moz-opacity: 0.7;   
    opacity: 0.7;  
    background-color:#000000;
    position:absolute;
    left:0px;
    top:0px;
    display:none;
    text-align:center;
    z-index: 100;
}  

.box1
{
    position: absolute;
    z-index: 300;
    
    border:solid 25px #FFFFFF;
    display:none;
}
.img_gallery
{
    cursor:pointer; 
    margin:5px;
}