js加事件参考

var isIE = /*@cc_on!@*/false;
function tracker(did,a){
 return function(){
  var t=new Date().getTime();
  var href=a.href;
        if(isIE){
            var r = /href\s*=\s*("|')?([^\s]*)\1/gi;
            if(r.test(a.outerHTML))
                href = RegExp.$2;
        }
        new Image().src = "http://hi.baidu.com/sys/statlog/1.gif?m=" + did + "&v=" + encodeURIComponent(href) + "&c=" + encodeURIComponent(location.href) + "&t="+t;
 }
}

function tracker_init(did){
 var _s=document.getElementById(did);
 var as = _s.getElementsByTagName('A');
 for(var i = 0, j = as.length; i < j; i ++){
  var a = as[i];
  if(isIE){
   a.attachEvent("onclick", tracker(did,a));
  }else{
   a.addEventListener("click", tracker(did,a), false);
  }
 }
}