a .alt { display: none; }

/* Div Layout */

#divmenu {
    position:absolute; left:0px;
    width: 134px;
    height: 42px;  
}

a#menudiv {
    display: block;
    width: 134px;
    height: 42px;
    background-image: url('/images/menudiv.png');
    background-position: 0 0;
    margin: 0 auto;
}

a#menudiv:hover {
    background-position: 0 -42px;
}


/* Iframe Layout */

#iframemenu {
    position:absolute; left:135px;
    width: 149px;
    height: 42px;
}

a#menuiframe {
    display: block;
    width: 149px;
    height: 42px;
    background-image: url('/images/menuiframe.png');
    background-position: 0 0;
    margin: 0 auto;
}

a#menuiframe:hover {
    background-position: 0 -42px;
}


/* Product Page Layouts */

#productmenu {
    position:absolute; left:284px;
    width: 218px;
    height: 42px;
}

a#menuproduct {
    display: block;
    width: 218px;
    height: 42px;
    background-image: url('/images/menuproduct.png');
    background-position: 0 0;
    margin: 0 auto;
}

a#menuproduct:hover {
    background-position: 0 -42px;
}


/* Contribute */

#contributemenu {
    position:absolute; left:503px;
    width: 129px;
    height: 42px;
}

a#menucontribute {
    display: block;
    width: 129px;
    height: 42px;
    background-image: url('/images/menucontribute.png');
    background-position: 0 0;
    margin: 0 auto;
}

a#menucontribute:hover {
    background-position: 0 -42px;
}