利用prototype 写 "loading..." 中间的handler

            function refreshit()
            {
                var handler={
                    onCreate:function(){
                        Element.show("div");
                    },
                    onComplete:function(){
                    if(Ajax.activeRequestCount==0){
                        Element.hide("div");
                    }
                  }
                };
                
                var option={
                parameters:"s=s",
                method:"get",
                onSuccess:function(transport){
                }
            };
            Ajax.Responders.register(handler);
            var request=new Ajax.Request("ajax.aspx",option);
            }