window.onload=function(){
	function getElement(id){
		return document.getElementById(id);
	}
	var speed=5;
	var zmd=getElement("zmd");
	var zmd1=getElement("zmd1");
	var zmd2=getElement("zmd2");
	zmd2.innerHTML=zmd1.innerHTML//复制zmd1中的图片到zmd2中
	function Marqueeleft(){//向左滚动
		if(zmd2.offsetWidth-zmd.scrollLeft<=0)
			zmd.scrollLeft-=zmd1.offsetWidth;
		else
			zmd.scrollLeft++;
	}
	function Marqueeright(){//向右滚动
		if(zmd2.offsetWidth-zmd.scrollLeft>=565)
			zmd.scrollLeft+=zmd1.offsetWidth;
		else
			zmd.scrollLeft--;
	}
	
	var MyMar=setInterval(Marqueeleft,speed)//自动开始滚动
 zmd.onmouseover=function() {clearInterval(MyMar)}
 zmd.onmouseout=function() {MyMar=setInterval(Marqueeleft,speed)};
}