var speed=15; // scroll speed (bigger = faster)
var dR=false; // reverse direction

// Vertical Scroller Javascript
// copyright 24th September 2005, by Stephen Chapman
// permission to use this Javascript on your web page is granted
// provided that all of the code below (as well as these
// comments) is used without any alteration
var step = 1;
function objWidth(obj)
{
	if(obj.offsetWidth) return obj.offsetWidth;
	if (obj.clip) return obj.clip.width;
	return 0;
}
function objHeight(obj)
{
	if(obj.offsetHeight) return obj.offsetHeight;
	if (obj.clip) return obj.clip.height;
	return 0;
}
function scrF(i,sH,eH)
{
	var x=parseInt(i.top)+(dR? step: -step);
	if(dR && x>sH)x=-eH;
	else if(x<2-eH)x=sH;
	i.top = x+'px';
}

function startScroll(sN,txt){
	var scr=document.getElementById(sN);
	var sW = objWidth(scr)-6;
	var sH = objHeight(scr);
	txt = ( txt == undefined ) ? "" : txt;
	scr.innerHTML = '<div id="'+sN+'in" style="position:absolute; left:3px; width:'+sW+';">'+scr.innerHTML+txt+'<\/div>';
	var sTxt=document.getElementById(sN+'in');
	var eH=objHeight(sTxt);
	sTxt.style.top=(dR? -eH : sH)+'px';
	sTxt.style.clip='rect(0,'+sW+'px,'+eH+'px,0)';
	setInterval
	(
		function()
		{
			scrF(sTxt.style,sH,eH);
		},
		1000/speed
	);
}
//window.onload = addScrollers;