动态注册事件触发时执行某函数

function registerMethod_i_p(object,eventName,callBack){
 if(window.addEventListener){ 
     var tempFFEventName=eventName.replace(/^on/,"");
  object.addEventListener(tempFFEventName,callBack,false);
 }else if(window.attachEvent){
  object.attachEvent(eventName,callBack);
 }else{
 }
}