//首页幻灯片
function imgadapter(obj, len, type) {
    var real_height = obj.height();
    var real_width = obj.width();
    if (type == "height") {
        if (obj.height() > len) {
            obj.height(len);
            obj.width(Math.round(obj.height() * real_width / real_height));
        }
    }
    if (type == "width") {
        if (obj.width() > len) {
            obj.width(len);
            obj.height(Math.round(obj.width() * real_height / real_width));
        }
    }
}

var countHDP = 0;
var currentHDP = 1;
function changeHDP() {
    $(".aa_cur").attr("class", "aa");

    $("#aa" + currentHDP + "").attr("class", "aa_cur");
    var curImg = $("#aa" + currentHDP); //.eq(currentHDP);
    $("#banner_img").fadeOut(1000, function() {
        var rightImg = $("#banner_img");
        rightImg.attr("src", curImg.attr("src"));
        rightImg.attr("alt", curImg.attr("alt"));
        rightImg.parent().attr("href", curImg.attr("url"));

        rightImg.fadeIn(1000);
    });
    if (currentHDP == countHDP) {
        currentHDP = 1;
    }
    else {
        currentHDP = parseInt(currentHDP) + 1;
    }
}

$(function() {

    //首页幻灯片
    countHDP = $(".banner_a a").length;
    //currentHDP = countHDP - 1;
    if (countHDP > 1) {
        var MyMar = setInterval(changeHDP, 5000); //设置定时器
        $(".banner_a a").mouseout(function() {
            MyMar = setInterval(changeHDP, 5000);
            $("#aa" + $(this).attr("t") + "").attr("class", "aa");
        
        });

        //mouseover
        $(".banner_a a").mouseover(function() {
            clearInterval(MyMar);

            $("#aa" + $(this).attr("t") + "").attr("class", "aa_cur");
            var curImg = $(this);
            var rightImg = $("#banner_img");
            rightImg.attr("src", curImg.attr("src"));
            rightImg.attr("alt", curImg.attr("alt"));
            rightImg.parent().attr("href", curImg.attr("url"));
        })


    }
})