/*图片切换*/
$(function () {
    if ($("#scrollimg2 img").length > 0) {
        if ($("#scrollimg2 img")[0].getAttribute('title').length > 19) {
            $("#img_Title").html($("#scrollimg2 img")[0].getAttribute('title').substring(0, 19) + "...");
        }
        else
            $("#img_Title").html($("#scrollimg2 img")[0].getAttribute('title'));
        scrollingImg();
    }
});
var nowShow = 2, scrollimgs;
function imgScroll(showNum, titleNum) {
    if (titleNum == undefined) {
        titleNum = document.getElementById("scrollimg2").getElementsByTagName("dt").length;
    }
    window.clearInterval(scrollimgs);
    document.getElementById("scrollimg2").className = "tagon" + showNum;
    nowShow = showNum;
    test = $("#scrollimg2 img");    //获得该id下面的img标签
    nowShow++;
    if (nowShow == 6) {
        nowShow = 5;
    }
    if (test[nowShow - 2].getAttribute('title').length > 19)
        $("#img_Title").html(test[nowShow - 2].getAttribute('title').substring(0, 19) + "..."); //将img标签的title的值付给id为"img_Title"的html内容
    else
        $("#img_Title").html(test[nowShow - 2].getAttribute('title'));
    if (nowShow > titleNum) { nowShow = 1; }
    scrollingImg();
}
function scrollingImg() {
    if (document.getElementById("scrollimg2") != "" && document.getElementById("scrollimg2") != null) {
        var titleNum = document.getElementById("scrollimg2").getElementsByTagName("dt").length;
       // alert(titleNum+"b");
        scrollimgs = window.setInterval(function () { imgScroll(nowShow, titleNum) }, 2000);
    }
}