function show_prod(p) {
    var page  = document.getElementById('prodindex_' + p);
    if (page != null) {
        page.style.display = 'block';
        page.style.width   = '649px';
        hideallexcept(p);

        document.getElementById('prodindex_text_' + p).style.color  = '#000000';
    }
    return false;
}

function hideallexcept(p) {
    document.getElementById('prodindex_text_0').style.color = '#8B8259';

    for (var i = 0; i <= 30; i++) {
        var page = document.getElementById('prodindex_' + i);
        if (page != null && p != i) {
            page.style.display = 'none';
            document.getElementById('prodindex_text_' + i).style.color = '#8B8259';
        }
    }
}