My custom slider for current picture

slider for current

    var small = $(".from litle a img"),
        big = $(".to big img");
    small.each(function(i, el) {
        var next = i + 1 == small.size() ? 0 : i + 1;
        $(el)
            .click(
                function(event) {
                    event.preventDefault();
                    if (big.data("next") == next) return;
                    big.fadeTo(500, 0.1, function() {
                        big.attr({
                                "src": $(el)
                                    .parent()
                                    .attr("href")
                            })
                            .data({
                                "next": next
                            });
                    });
                    big.fadeTo(800, 1);
                }
            )
    });
    big.data({
            "next": 1
        })
        .click(function(event) {
            small.eq($(this)
                    .data("next"))
                .click()

        })