dede图片带左右箭头翻页(jquery/js)

 1、<script type="text/javascript" src="{dede:global.cfg_templets_skin/}/js/jquery-1.7.1.min.js"></script>
 2、<script type="text/javascript">
        function KeleyiImgNext(bigimg) {
            var lefturl = '';           //上一页地址
            var righturl = ''; //下一页地址
var nowpage={dede:field.nowpage/};   //获取当前页面数
var totalpage={dede:field.totalpage/};//获取总页面数量
var aid={dede:field.id/};     //获取文章Id
var uurl="{dede:field name='arcurl'/}" ;
var turl=uurl.substr(0,uurl.lastIndexOf("/")+1);

if (totalpage < 2) return;
            //拼接上一页的地址
            if (nowpage==1) {
lefturl="#";
            }else if(nowpage==2){
lefturl = turl+aid+'.html';
}else{
                lefturl = turl+aid+'_'+(nowpage-1)+'.html';
            }
            //拼接下一页的地址
if(nowpage<totalpage){
righturl= turl+aid+'_'+(nowpage+1)+'.html';
}else{
righturl="#";
}
            var imgurl = righturl;
            var width = bigimg.width;
            var height = bigimg.height;