function enlarge_element(elem, options) {
    if (elem == '' || !elem)
        return;
    if (options.enlarge) {
        elem.css({
            'zIndex': 1
        }).animate({
            width: "480px",
            height: "273px"
        }, 200, "easeInOutSine");
    } else {
        elem.animate({
            width: "159px",
            height: "90px"
        }, 200, "easeInOutSine", function() {
            elem.css({
                'zIndex': 0
            });
        });
    }
    if (options.hover == true) {
        var id = elem.attr('id');
        if (id != '')
            $('a[rel=' + id + ']').toggleClass('hover');
    }
}