var timer;
	var move = false;
	
	var show_box_id;
	var speed;

	function showBoxInit(init_show_box_id, init_speed)
	{
		show_box_id = init_show_box_id;
		speed = init_speed;
			
		var show_box = document.getElementById(show_box_id);
		show_box.style.overflow = "hidden";
	}

	function startScroll(side, box)
	{
		if(move == false)
		{
			if(side == "left")
				timer = window.setInterval("leftScroll('content_js')", speed);
			else if(side == "right")
				timer = window.setInterval("rightScroll('content_js')", speed);
				
			move = true;
		}
	}
	
	function stopScroll()
	{
		clearInterval(timer);
		move = false;
	}


	function leftScroll(box)
	{
		var scroll_box = document.getElementById(box);
		
		var left = scroll_box.style.left;
		if(left != "0px")
		{
			scroll_box.style.left = (left.substring(0, left.length-2)*1+1)+"px";
		}	
		else
			stopScroll();
	}
	
	function rightScroll(box)
	{
		var scroll_box = document.getElementById(box);
		var scroll_box_width = scroll_box.style.width;
		scroll_box_width = scroll_box_width.substring(0, scroll_box_width.length-2);
		
		var left = scroll_box.style.left;
		
		var show_box = document.getElementById(show_box_id);
		var show_box_width = show_box.style.width;
		show_box_width = show_box_width.substring(0, show_box_width.length-2);
		
		
		if(left != "-"+(scroll_box_width - show_box_width + 2)+"px")
			scroll_box.style.left = (left.substring(0, left.length-2)*1-1)+"px";
	}