//获取广告
function getAdCode(adpage, place, htmlid) {
    $.getJSON(
            "/Service/commonHandler.ashx", { type: "getad", adpage: adpage, adplace: place },
            function(json) {
                if (json.code != "" && json.code != null) {
                    $("#" + htmlid).html(json.code);
                }
            });
}