// hidden by default to prevent flicker
    function showGallery(){
    objectId = 'galleria';
    if ( document.getElementById && 
        document.getElementById( objectId ) ) {
        // W3C DOM
        document.getElementById( objectId ).style.visibility='visible';
    } else if ( document.all && document.all( objectId ) ) {
        // MSIE 4 DOM
        document.all( objectId ).style.visibility='visible';
    } else {
        // no nothing        
    }
    return true;
}