jquery3图并列焦点图代码

一款带切换按钮的每屏3图自动轮播特效，兼容主流浏览器。
$(".picimglink").css("text-decoration", "none");
$(".picimglink").bind({
    mouseenter: function() {
        $(this).children("span").animate({
            bottom: "0px"
        },
        500)
    },
    mouseleave: function() {
        $(this).children("span").clearQueue().animate({
            bottom: "-30px"
        },
        500)
    }
});
var biZhiDelayLoadImg = $("#bigSlideUl img");
var biZhiDelayLoadImgLength = biZhiDelayLoadImg.length;
for (var i = 3; i < biZhiDelayLoadImgLength; i++) {
    var curDelayImg = biZhiDelayLoadImg.eq(i);
    if (curDelayImg.attr("srch")) {
        curDelayImg.attr("src", curDelayImg.attr("srch"));
        curDelayImg.removeAttr("srch")
    }
}
var _focus_num = $("#smallSlideUl > li").length;
var _focus_direction = true;
var _focus_pos = 0;
var _focus_max_length = _focus_num * 720;
var _focus_li_length = 720;
var _focus_dsq = null;
var _focus_lock = true;
function autoExecAnimate() {
    $("#mypic" + _focus_pos).addClass("info-cur").siblings("li.info-cur").removeClass("info-cur");
    var moveLen = _focus_pos * _focus_li_length;
    $("#bigSlideUl").animate({
        left: "-" + moveLen + "px"
    },
    600);
    if (_focus_pos == (_focus_num - 1)) {
        _focus_direction = false
    }
    if (_focus_pos == 0) {
        _focus_direction = true
    }
    if (_focus_direction) {
        _focus_pos++
    } else {
        _focus_pos--
    }
}
_focus_dsq = setInterval("autoExecAnimate()", 6000);
$("#smallSlideUl > li").hover(function() {
    _focus_pos = parseInt($(this).attr("sid"));
    if (_focus_lock) {
        clearInterval(_focus_dsq);
        _focus_lock = false
    }
    $("#mypic" + _focus_pos).addClass("info-cur").siblings("li.info-cur").removeClass("info-cur");
    var moveLen = _focus_pos * _focus_li_length;
    $("#bigSlideUl").stop(true, true).animate({
        left: "-" + moveLen + "px"
    },
    600)
},
function() {
    if (_focus_lock == false) {
        _focus_dsq = setInterval("autoExecAnimate()", 6000);
        _focus_lock = true
    }
});
$("#bigSlideUl").hover(function() {
    if (_focus_lock) {
        clearInterval(_focus_dsq);
        _focus_lock = false
    }
},
function() {
    if (_focus_lock == false) {
        _focus_dsq = setInterval("autoExecAnimate()", 6000);
        _focus_lock = true
    }
});
$(".pic-list2 li").hover(function() {
    $(this).addClass("hover").siblings().removeClass("hover")
},
function() {
    $(this).removeClass("hover")
});