function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

// =S 图片向下滚动
function rollUp() {
	var speed=10;
	pic_box_r.innerHTML = pic_box.innerHTML;
	function Marquee1(){
		if(pic_box_r.offsetTop - butong_pic.scrollTop <= 0) {
			butong_pic.scrollTop -= pic_box.offsetHeight;
		} else {
			butong_pic.scrollTop++;
		}
	}
	var MyMar1 = setInterval(Marquee1,speed);
	butong_pic.onmouseover = function() {
		clearInterval(MyMar1);
	} 
	butong_pic.onmouseout = function(){
		MyMar1 = setInterval(Marquee1,speed)
	}
}
addLoadEvent(rollUp); // =E 图片向下滚动

//　=S 图片向上滚动
function scrollDown() {
	var speed = 10;
	pic_box_r2.innerHTML = pic_box2.innerHTML;
	butong_pic2.scrollTop = butong_pic2.scrollHeight;
	function Marquee2(){
		if(pic_box2.offsetTop - butong_pic2.scrollTop >= 0) {
			butong_pic2.scrollTop += pic_box_r2.offsetHeight;
		}
		else{
			butong_pic2.scrollTop--;
		}
	}
	var MyMar2 = setInterval(Marquee2,speed);
	butong_pic2.onmouseover = function() {
		clearInterval(MyMar2);
	}
	butong_pic2.onmouseout = function() {
		MyMar2=setInterval(Marquee2,speed);
	}
}
addLoadEvent(scrollDown); //　=E 图片向上滚动