Jquery中国地图热点效果-鼠标经过弹出提示层信息的简单实例
   
   
   
        .map img
        {
            width: 496px;
            height: 415px;
        }
        .mapDiv
        {
            width: 140px;
            height: 61px;
            padding: 5px;
            color: #369;
            background: url('/blog_article/Images/dialge.gif') no-repeat;
            position: absolute;
            display: none;
            word-break: break-all;
        }
   
   
        $(document).ready(function () {
            $("area").each(function () {
                var $x = -55;
                var $y = -80;
                var name = $(this).attr("alt");
                $(this).mouseover(function (e) {
                    var strall = [];
                    strall = $(this).attr("coords").split(",");
                    var x = parseInt(strall[0]);
                    var y = parseInt(strall[3]);
                    var index_num = $(this).index();
                    var dom = "";
                    $("body").append(dom);
                    $(".name").text(name);
                    $(".num").text(index_num)
                    $(".mapDiv").css({
                        left: (x + $x) + "px",
                        top: (y + $y) + "px"

                    }).show();
                }).mouseout(function () {
                    $(".mapDiv").remove();
                }).mousemove(function (e) {
                    $(".mapDiv").css({
                        left: (x + $x) + "px",
                        top: (y + $y) + "px"
                    })
                });
            });
            //first load
            show();
            //random
            setInterval(show, 3000); // 注意函数名没有引号和括弧
        });

        function show() {
            var area = $("area");
            var random = getRandom(area.length);
            $(area[random]).trigger("mouseover");
        }

        function getRandom(n) { return Math.floor(Math.random() * n + 1) }