自动轮播 和 鼠标事件
var arr = ["images/d.jpg", "images/q.jpg", "images/c.jpg", "images/b.jpg"];

    //定义一个下标

    var p = -1;

    //自动轮播

    setInterval(function () {

        p++;

        if (p >= arr.length) {

            p = 0;

        }

        $("#tp").attr("src", arr[p]);

    }, 2000);

//--------------------------------鼠标事件-------------------------------------------

    $('#touming').mouseover(function(){

        $('#tp3').css("display","block");

        $('#wz').css("display","none");

//        $('#tp2').css("display","none");

    });

    $('#touming').mouseout(function(){

        $('#tp3').css("display","none");

        $('#wz').css("display","block");

//        $('#tp2').css("display","block");

    });