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
     {/*Netscape stuff*/}

//alert(diffY);

percent=.1*(diffY-lastScrollY); 

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


document.getElementById("float_promote").style.top=parseInt(document.getElementById
("float_promote").style.top)+percent+"px";

document.getElementById("float_promote2").style.top=parseInt(document.getElementById
("float_promote2").style.top)+percent+"px";

lastScrollY=lastScrollY+percent; 

//alert(lastScrollY);
}


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

/*document.getElementById("to_now").onclick = function(){
	document.getElementById("promote_s").style.display ="block";
	document.getElementById("to_now").className="bgnow";
	document.getElementById("to_min").className="bgnone";

	}
document.getElementById("to_min").onclick = function(){
	document.getElementById("promote_s").style.display ="none";
	document.getElementById("to_now").className="bgnone";
	document.getElementById("to_min").className="bgmin";
	}
	
document.getElementById("to_closed").onclick = function(){
	document.getElementById("float_promote").style.display ="none";
	document.getElementById("float_promote").innerHTML = "";
	}*/