function Picture(nameA,nameB,nameC,nameD,nameE){//建创类
 this.NameA=nameA;
 this.NameB=nameB;
 this.NameC=nameC;
 this.NameD=nameD;
 this.NameE=nameE;
}
Picture.prototype.LeftRightScroll=function(){
var ScrollMain=document.getElementById(this.NameA) 
var Regional1=document.getElementById(this.NameB) 
var Regional2=document.getElementById(this.NameC)
var button_left=document.getElementById(this.NameD)
var button_right=document.getElementById(this.NameE)
var dir=1 //每步移动像素，大＝快，正左负右 
var speed=30//循环周期（毫秒）大＝慢 
Regional2.innerHTML=Regional1.innerHTML 
function Marquee(){//正常移动 
if (dir>0  && (Regional2.offsetWidth-ScrollMain.scrollLeft)<=0) ScrollMain.scrollLeft=0 
if (dir<0 &&(ScrollMain.scrollLeft<=0)) ScrollMain.scrollLeft=Regional2.offsetWidth 
ScrollMain.scrollLeft+=dir 
ScrollMain.onmouseover=function() {clearInterval(MyMar)}//暂停移动 
ScrollMain.onmouseout=function() {MyMar=setInterval(Marquee,speed)}//继续移动 
} 
button_left.onclick=function(){if (dir=-1)dir=1}
button_right.onclick=function(){if (dir=1)dir=-1}
var MyMar=setInterval(Marquee,speed)
}