跨浏览器实现自定义事件处理

/**跨浏览器实现自定义事件处理
*author:Mygirl
**/
window.DEvent = {
    addListener:function(obj,target,act){
          if(obj.attachEvent)
                 obj.attachEvent("on" + target , act);
          if(obj.addEventListener)
                 obj.addEventListener(target , act , false);
     }
     removeListener:function(obj,target,act){
          if(obj.detachEvent)
                   obj.detachEvent("on"+target,act);
          if(obj.removeEventListener)
                   obj.removeEventListener(target,act,false);
     }   
}

Object.prototype.eventHandler = function(handler){
     var b = this ;
     b = b;
     return function(c){
               if(!c){
                       c = window.event ;
                }
                if(c&&!c.target){
                       c.target = c.srcElement; 
                }
                b[handler](c);
      }   
}

function test(){
var container = document.getElementById("div1");
this.container.onmouseMove = this.eventHandler("onMouseMoveMouse");CEvent.addListener(this.container, "mousemove", this.eventHandler("onmapmousemove"));
}

Zx.prototype.onmapmousemove = function(evt) {
/*var cpointtmp = new ZxPoint(this.container.offsetLeft + evt.clientX - this.mapDiv.offsetLeft, this.container.offsetTop + evt.clientY - this.mapDiv.offsetTop);
        Theodolite$setPoint(cpointtmp);*/
alert("test");
 }