<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"); 
}