var movedividx = new Array();

var dis = 170;

var shift = 15;



function movediv(divid,idx)

{

	x = document.getElementById(divid);



	pos = parseInt(x.style.top.replace(/[^\-0-9]/g,''));

	newpos = (idx-1) * -dis;

	

	if (newpos != pos)

	{

		if (newpos < pos)

		{

			 toppos = pos - shift;

			 if (toppos < newpos) toppos = newpos;

		}

		else

		{

			toppos = pos + shift;

			 if (toppos > newpos) toppos = newpos;

		}

		

		x.style.top = toppos;

	

		setTimeout('movediv("' + divid + '",' + idx + ')',10);

	}

	else setdiv_idx(divid,idx);

}



function setdiv_idx(divid,idx)

{

	movedividx[divid] = idx;



	for(x=1; x <= 4; x++)

	{

		img = divid + x;

		document [img].src = "../images/scroller/off.gif";

	}

	

	img = divid + idx;

	document [img].src = "../images/scroller/on.gif";

}



function movediv_down(divid)

{

	if (movedividx[divid] === undefined) setdiv_idx(divid,1);

	

	if (movedividx[divid] < 4)

	{

		newidx = movedividx[divid] + 1;

		movediv(divid,newidx)

	}

}



function movediv_up(divid)

{

	if (movedividx[divid] === undefined) setdiv_idx(divid,1);

	

	if (movedividx[divid] > 1)

	{

		newidx = movedividx[divid] - 1;

		movediv(divid,newidx)

	}

}