function makevisible(which, obj) {
    if (which == 0)
        switch (obj) {
        case 1:
            document.getElementById('appearance').filters.alpha.opacity = 100
            document.getElementById('shop').filters.alpha.opacity = 20
            document.getElementById('fasteners').filters.alpha.opacity = 20
            break;
        case 2:
            document.getElementById('appearance').filters.alpha.opacity = 20
            document.getElementById('shop').filters.alpha.opacity = 100
            document.getElementById('fasteners').filters.alpha.opacity = 20
            break;
        case 3:
            document.getElementById('appearance').filters.alpha.opacity = 20
            document.getElementById('shop').filters.alpha.opacity = 20
            document.getElementById('fasteners').filters.alpha.opacity = 100
            break;
        default:
            document.getElementById('appearance').filters.alpha.opacity = 100
            document.getElementById('shop').filters.alpha.opacity = 100
            document.getElementById('fasteners').filters.alpha.opacity = 100
    }
    else {
        document.getElementById('appearance').filters.alpha.opacity = 100
        document.getElementById('shop').filters.alpha.opacity = 100
        document.getElementById('fasteners').filters.alpha.opacity = 100
    }
}