var index = 0;
<!--获取当前图片地址函数封装-->
function getCurrentIndex(iTarget,className){
    $(iTarget).each(function(i){
        if($(this).attr("class") == className){
            index = i;
        }
    });
    return index;
}

<!--得到当前显示的位置函数封装-->
function getCurrentShowIndex(object,AttrName,AttrValue){
    object.each(function(i){
        if($(this).attr(AttrName) == AttrValue){
            index = i;
        }
    });
    return index;
}

<!--切换函数封装-->
function Play(i,iTarget,className,textTarget,actile){
    $(iTarget).eq(i)
        .fadeIn()
        .addClass(className)
        .siblings()
        .fadeOut()
        .removeClass(className);
        $(textTarget).text(actile.eq(i).text());
}

<!--封装切换函数2-->
function Play2(i,iTarget,className,textTarget,actile,btnTar,btnClassName){
    $(iTarget).eq(i)
        .fadeIn()
        .addClass(className)
        .siblings()
        .hide()
        .removeClass(className);
    $(btnTar).eq(i)
        .removeClass(btnClassName)
        .addClass(btnClassName)
        .siblings()
        .removeClass(btnClassName);
    $(textTarget).text(actile.eq(i).text());
}

<!--显示大图公用函数-->
function showImg(obj,bigShow,tarShow,tarImg,tarContent,imgProportion){
    var imgSrc = $(obj).find("img").attr("src");
    var imgWid = $(obj).find("img").attr("width");
    var imgHei = $(obj).find("img").attr("height");
    var summer = $(obj).find(".summers").text();
    summer = summer.split("$");
    $(bigShow).css({
        "width":$(document).width(),
        "height":$(document).height()
    },0).animate({
            "opacity":0.3
        },0).show();
    $(tarShow).animate({
        "width":imgWid * 3.2 + "px",
        "height":imgHei * 2 + 20 + "px"
    }).fadeIn(100);
    $(tarImg).attr({
        "src":imgSrc,
        "width":imgWid * imgProportion + "px",
        "height":imgHei * imgProportion + "px"
    }).css({
            "margin":"10px"
        });
        $(".right_content").css({
            "width":$(tarContent).css("width") - $(tarImg).css("width") + "px"
        });
        $(tarContent).empty();
        $(obj).find("a").clone(true).appendTo(tarContent);
        for(var index = 0;index < summer.length; index ++){
            $(tarContent).append("<p> " + summer[index] + "</p>");
        }
}
function showImg_2(obj,bigShow,tarShow,tarImg,imgProportion){
    var imgSrc = $(obj).find("img").attr("src");
    var imgWid = $(obj).find("img").attr("width");
    var imgHei = $(obj).find("img").attr("height");
    $(bigShow).css({
        "width":$(document).width(),
        "height":$(document).height()
    },0).animate({
            "opacity":0.3
        },0).show();
    $(tarShow).animate({
        "width":imgWid * 2 + 20 + "px",
        "height":imgHei * 2 + 50 + "px"
    }).fadeIn(100);
    $(tarImg).attr({
        "src":imgSrc,
        "width":imgWid * imgProportion + "px",
        "height":imgHei * imgProportion + "px"
    }).css({
            "margin":"10px"
        });
    $(tarShow).find(".titles_r").remove();
    $(obj).find("a").clone(true).appendTo(tarShow);
}