// JavaScript Document

lastScrollY=0;

function heartBeat(){ 

var diffY;

if (document.documentElement && document.documentElement.scrollTop)

	diffY = document.documentElement.scrollTop;

else if (document.body)

	diffY = document.body.scrollTop

else

    {/*·½±ãÀ©Õ¹*/}

	//alert(diffY);

percent=.1*(diffY-lastScrollY); 

if(percent>0)percent=Math.ceil(percent); 

else percent=Math.floor(percent); 
lastScrollY=lastScrollY+percent; 
//alert(lastScrollY);
}

window.setInterval("heartBeat()",1);