var pageScrollTimer;
function pageScroll(toY,fromY) {
	if ( document.compatMode == 'CSS1Compat'){
		var temp=document.documentElement.scrollTop;
	}else{
		var temp=document.body.scrollTop;
	}
	var speed=5;
	if (pageScrollTimer){
		clearTimeout(pageScrollTimer);
		if (!toY || toY < 0) {
			toY = 0;
			if (!fromY){
				fromY = temp;
			}
			fromY += (toY - temp) / speed;
			if (fromY < 0) {
				fromY = 0;
			}
				var posY = Math.floor(fromY);
				window.scrollTo(0, posY);
		}
	}
	if (posY != toY) {
		pageScrollTimer = setTimeout("pageScroll("+toY+","+fromY+")",19);
	}
}