//导航下拉菜单

var mouseover_tid = [];
var mouseout_tid = [];

$(function() {
    $('ul.topnav li').each(function(index) {
        $(this).hover(
        function() {
            var _self = this;
            clearTimeout(mouseout_tid[index]);
            mouseover_tid[index] = setTimeout(function() {
                $(_self).find('.subnav').slideDown(200);
            }, 200);
        },
        function() {
            var _self = this;
            clearTimeout(mouseover_tid[index]);
            mouseout_tid[index] = setTimeout(function() {
                $(_self).find('.subnav').slideUp(200);
            }, 200);
        });
    });
});


//地铁常识图片切换
$(document).ready(function() {
    $("#aqzs").hover(
        function() {
            var varPicUrl = $(this).children("img").attr("src");
            $("#aqzs").attr("src", "../images/index/aqzs2.gif");
        },
        function() {
            $("#aqzs").attr("src", "../images/index/aqzs1.gif");
        });
});

$(document).ready(function() {
    $("#dtcs").hover(
        function() {
            var varPicUrl = $(this).children("img").attr("src");
            $("#dtcs").attr("src", "../images/index/dtcs2.gif");
        },
        function() {
            $("#dtcs").attr("src", "../images/index/dtcs1.gif");
        });
});


$(document).ready(function() {
    $("#zxnc").hover(
        function() {
            var varPicUrl = $(this).children("img").attr("src");
            $("#zxnc").attr("src", "../images/index/zxnc2.gif");
        },
        function() {
            $("#zxnc").attr("src", "../images/index/zxnc1.gif");
        });
});

$(document).ready(function() {
    $("#zxjy").hover(
        function() {
            var varPicUrl = $(this).children("img").attr("src");
            $("#zxjy").attr("src", "../images/index/zxjy2.gif");
        },
        function() {
            $("#zxjy").attr("src", "../images/index/zxjy1.gif");
        });
});

$(document).ready(function() {
    $("#dzdt").hover(
        function() {
            var varPicUrl = $(this).children("img").attr("src");
            $("#dzdt").attr("src", "../images/index/dzdt2.gif");
        },
        function() {
            $("#dzdt").attr("src", "../images/index/dzdt1.gif");
        });
});