function setTab(name, cursel, n) {
    for (i = 1; i <= n; i++) {
        var menu = document.getElementById(name + i);
        var con = document.getElementById("con_" + name + "_" + i);
        menu.className = i == cursel ? "hover" : "";
        con.style.display = i == cursel ? "block" : "none";
    }
}
$(document).ready(function() {
    var len = $(".num > li").length;
    var index = 0;
    var adTimer;
    showImg(index);
    $(".num li").mouseover(function() {
        index = $(".num li").index(this);
        showImg(index);
    }).eq(0).mouseover();
    //滑入 停止动画，滑出开始动画.
    $('#banner').hover(function() {
        clearInterval(adTimer);
    }, function() {
        adTimer = setInterval(function() {
            index++;
            if (index == len) { index = 0; }
            showImg(index);
        }, 8000);
    }).trigger("mouseleave");
});

function showImg(index) {
    //定义图片的src

    var imgsrc = $("#hid_img").val();
    var src = new Array();
    src = imgsrc.split(",");

    //运用图片预加载插件
    //$(".ad img").loadthumb({ src: src[index] });

    $("#img_ad").attr("src", src[index]);

    var hrefUrl = $("#hid_url").val();
    var aurl = new Array();
    aurl = hrefUrl.split(",");

    $(".num li").removeClass("on").eq(index).addClass("on");
    if (aurl[index] != "#" && aurl[index] != "http://#")
        $("#a_ad").attr("href", aurl[index]);
    else
        $("#a_ad").attr("href", "#");
}