var speed=30;
var direction = 'left';
document.getElementById('demo2').innerHTML=document.getElementById('demo1').innerHTML
document.getElementById('demo').scrollLeft = document.getElementById('demo1').offsetWidth;
function setdirection (d)
{
	direction = d;
}
function Marquee(){
	if(direction=='left'){
		if(document.getElementById('demo2').offsetWidth-document.getElementById('demo').scrollLeft<=0)
			document.getElementById('demo').scrollLeft -= document.getElementById('demo1').offsetWidth;
		else{
			document.getElementById('demo').scrollLeft++
		}
	}else{
		if(document.getElementById('demo2').offsetWidth-document.getElementById('demo').scrollLeft>=document.getElementById('demo1').offsetWidth){
			document.getElementById('demo').scrollLeft += document.getElementById('demo1').offsetWidth;
		}else{
			document.getElementById('demo').scrollLeft--;
		}
	}
}
var MyMar=setInterval(Marquee,speed)
document.getElementById('demo').onmouseover=function() {clearInterval(MyMar)}
document.getElementById('demo').onmouseout=function() {MyMar=setInterval(Marquee,speed)}

var current = 0;
function changepic (updown)
{
	if(updown=="up"){
		if(current>0)
			current--;
	}else if(updown=="down"){
		if(current<bm.length-1)
			current++;
	}else{
		current = arguments[1];
	}
	document.getElementById('bmodel').src = bm[current];
}