var speed=8; // scroll speed (bigger = faster)
	var dR=false; // reverse direction
	var step = 2;

	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);
		scr.innerHTML = '<div id="'+sN+'in" style="position:absolute; left:3px; width:'+sW+';">'+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);
	}