// 引入jjtrace函数

                            function jjtrace(o) {

                                     var g = document.getElementById("trackiframe");

                                     if(!g) {

                                               g = document.createElement("iframe");

                                               g.id = "jjtrackiframe";

                                               g.style.position = "absolute";

                                               g.style.left = "-1000px";

                                               g.style.top = "-1000px";

                                               document.body.appendChild(g);

                                     }

                                               g.src = "http://jingjia.baidu.com/jj7972/?url="+o.href;       

                            }