var lastScrollY=0;
function heartBeat(){ 
	diffY = document.documentElement.scrollTop;
	percent = 0.1*(diffY-lastScrollY);
	if(percent > 0)
		percent = Math.ceil(percent);
	else
		percent = Math.floor(percent);
		
	document.getElementById("sorollDiv1").style.top=parseInt(document.getElementById("sorollDiv1").style.top)+percent+"px";
	
	lastScrollY= lastScrollY + percent;
}
if(document.getElementById("sorollDiv1")){
window.setInterval("heartBeat()",1);
}