/*新闻滚动*/
$(function () {
    var $this = $(".scrollNews");
    var scrollTimer;
    $this.hover(function () {
        clearInterval(scrollTimer);
    }, function () {
        scrollTimer = setInterval(function () {
                scrollNews($this);
            }, 3000);
    }).trigger("mouseleave");
});
function scrollNews(obj) {
    var $self = obj.find("ul:first");
    var lineHeight = $self.find("li:first").height(); //获取行高
    $self.animate({
        "marginTop" : -lineHeight + "px"
    }, 600, function () {
        $self.css({
            marginTop : 0
        }).find("li:first").appendTo($self); //appendTo能直接移动元素
    })
}