var g_nFrameHeight = 200;
var g_nScrollTime = 20;
var g_nScrollStep = 1;
var g_yPos = 0;
var g_nTimer = null;

function Scroll_Toggle()
{
	if (g_nTimer == null)
	{
	 g_nTimer = setTimeout("Scroll_DoScroll()", g_nScrollTime);
	}
	else
	{
	 clearTimeout(g_nTimer);
	 g_nTimer = null;
	}
}

function Scroll_DoScroll()
{
	var spanel = document.getElementById('scrollPanel');
	
	var nHeight = spanel.offsetHeight
	
	g_yPos -= g_nScrollStep;

	spanel.style.top = g_yPos + 'px';

	if (g_yPos <= -nHeight)
	{ g_yPos = g_nFrameHeight; }	

	g_nTimer = setTimeout("Scroll_DoScroll()", g_nScrollTime);
}

function Scroll_Init()
{
	var sframe = document.getElementById('scrollFrame');
	var spanel = document.getElementById('scrollPanel');	

	sframe.style.position	= 'relative';	
	sframe.style.overflow	= 'hidden';
	sframe.style.height		= g_nFrameHeight + 'px'

	spanel.style.position	= 'relative';
	
	Scroll_Toggle();
}