<div id="mydiv" style="cursor:pointer; background-color:#F00">nihaoa</div> <script language="javascript"> 

Object.prototype.addListener=function(ev,fn){   if (this.attachEvent) {     this.attachEvent('on' + ev, fn);   }else{      this.addEventListener(ev,fn,false);   } }     var mydiv=document.getElementById("mydiv"); mydiv.addListener('click', click1,false); mydiv.addListener('click', click2, false); console.log(mydiv); function click1(){   alert("click1"); }    function bclick2(){   alert("click2"); }