Js图片切换特效中的左右箭头功能实现代码
function $(e){
return "string" == typeof e ? document.getElementById(e) : e;
}
var Event={
add:function (obj,EventType,fn){
if (obj.attachEvent){
obj['e'+EventType+fn] = fn;
obj[EventType+fn] = function() {obj['e'+EventType+fn](window.event);}
obj.attachEvent('on'+EventType,obj[EventType+fn]);
}else if(obj.addEventListener){
obj.addEventListener(EventType,fn,false);
}else{
obj['on'+EventType]=fn;
}
}
,
remove:function(obj,Event,fn){
if (obj.detachEvent){