.gif {
    display:block; 
    width:480px; 
    height:270px; 
    background:url(22.jpg) no-repeat;
}

a.gif img {
    visibility:hidden;
}

a.gif:hover {
    background:none;
}

a.gif:hover img {
    visibility:visible; 
    border:0;
}





.gif1 {
    display:block; 
    width:480px; 
    height:270px; 
    background:url(126g.gif) no-repeat;
}

a.gif1 img {
    visibility:hidden;
}

a.gif1:hover {
    background:none;
}

a.gif1:hover img {
    visibility:visible; 
    border:0;
}