/**
* @author feiwen
*/
(function ($) {
    $.fn.textSlider = function (settings) {
        settings = jQuery.extend({
            speed: "normal",
            line: 2,
            timer: 3000
        }, settings);
        return this.each(function () {
            $.fn.textSlider.scllor($(this), settings);
        });
    };
    $.fn.textSlider.scllor = function ($this, settings) {
        var ul = $("ul:eq(0)", $this);
        var timerID;
        var li = ul.children();
        var liHight = $(li[0]).height();
        var upHeight = 0 - settings.line * liHight; //滚动的高度；
        var scrollUp = function () {
            ul.animate({ marginTop: upHeight }, settings.speed, function () {
                for (i = 0; i < settings.line; i++) {
                    ul.find("li:first", $this).appendTo(ul);
                }
                ul.css({ marginTop: 0 });
            });
        };
        var autoPlay = function () {
            timerID = window.setInterval(scrollUp, settings.timer);
        };
        var autoStop = function () {
            window.clearInterval(timerID);
        };
        //事件绑定
        ul.hover(autoStop, autoPlay).mouseout();
    };
})(jQuery);