var tm;
function toTop(){
	var bName = navigator.appName.charAt(0)
	if(bName == "N"){
		//NN
		py = window.pageYOffset;
	}else{
		//IE
		py = document.body.scrollTop;
	}
	if(py <= 1){
		clearTimeout(tm);
		scrollTo(0,0);
	}else{
		d = (py / 4);
		d = (-1*d) - 2;
		if(d < -100 ){
			d = -100;
		}
		scrollBy(0,d);
		tm = setTimeout("toTop()",20);
	}
}