var speed=30;
var demo,demo1,demo2;

var start_time,end_time;
var move_hander = 0;
var moving;
var moving_height = 22;

function boxTop()
{
	if(moving > moving_height)
	{
		clearInterval(move_hander);
		move_hander = 0;
		return;
	}
	else
		moving++;

//	if(demo2.offsetTop-demo.scrollTop<=0)
//		demo.scrollTop -= demo1.offsetHeight;
//	else
		demo.scrollTop++;
}

function boxBottom()
{
	if(moving > moving_height)
	{
		clearInterval(move_hander);
		move_hander = 0;
		return;
	}
	else
		moving++;

	//    if(demo1.offsetTop-demo.scrollTop>=0)
	//    	demo.scrollTop+=demo2.offsetHeight;
	//    else
	demo.scrollTop--;
}

function boxRight()
{
	if(demo.scrollLeft<=0)
	{
		demo.scrollLeft+=demo2.offsetWidth
	}
	else
	{
		demo.scrollLeft--
	}
}

function boxLeft()
{
	if(demo2.offsetWidth-demo.scrollLeft<=0)
	{
		demo.scrollLeft-=demo1.offsetWidth
	}
	else
	{
		demo.scrollLeft++
	}
}

function move_top(d1,d2,d3)
{
	demo=document.getElementById(d1);
	demo1=document.getElementById(d2);
	demo2=document.getElementById(d3);

	if(moving <= moving_height || move_hander > 0)
		return;
		
	scroll_count--;
	moving = 0;
	move_hander = setInterval(boxTop,speed);
}

function move_bottom(d1,d2,d3)
{
	demo=document.getElementById(d1);
	demo1=document.getElementById(d2);
	demo2=document.getElementById(d3);

	if(moving <= moving_height || move_hander > 0)
		return;
		
	scroll_count++;
	moving = 0;
	move_hander = setInterval(boxBottom,speed);
}

function scroll_news()
{
	demo=document.getElementById('news_list');
	demo1=document.getElementById('nlist1');
	demo2=document.getElementById('nlist2');

	if(scroll_count > 0)
	{
		if(moving <= moving_height || move_hander > 0)
			return;
			
		scroll_count--;
		moving = 0;
		move_hander = setInterval(boxTop,speed);
	}
	else
	{
		demo.scrollTop = 0;
		scroll_count = (news_count - 3) > 0 ? (news_count - 3) : 0;
	}
}