function slide_left(content)
{
    if (SLIDE) {
        return false;
    }
    var current = Nodes(content).getElementsByClassName('current')[0];
    var prev = Nodes(current).previous_tag('LI');
    if (prev) {
        CssClasses(current).remove('current');
        CssClasses(prev).add('current');
        slide_to(content, get_left(content) + 240);
    }
}

function slide_right(content)
{
    if (SLIDE) {
        return false;
    }
    var current = Nodes(content).getElementsByClassName('current')[0];
    var next = Nodes(current).next_tag('LI');
    var second = Nodes(next).next_tag('LI');
    var third = Nodes(second).next_tag('LI');
    var fourth = Nodes(third).next_tag('LI');
    if (fourth) {
        CssClasses(current).remove('current');
        CssClasses(next).add('current');
        slide_to(content, get_left(content) - 240);
    }
}