function pageScrollToTop(){
	var speed1 = 3;
	var speed2 = 4;
	var sec = 40;
	var y;
	var cy;
	var gy = 0;
	var scrollEngine;
	if(document.all){
		cy = document.documentElement.scrollTop;
	}
	else if(document.layers || document.getElementById){
		cy = pageYOffset;
	}
	y = cy-gy;
	if(Math.abs(y)>50){
		cy = Math.round(cy-(y/speed1));
		window.scroll(0,cy);
		scrollEngine = setTimeout("pageScrollToTop()",sec);	
	}else if(Math.abs(y)>2){
		cy = Math.round(cy-(y/speed2));
		window.scroll(0,cy);
		scrollEngine = setTimeout("pageScrollToTop()",sec);	
	}else{
		window.scroll(0,0);
		clearTimeout(scrollEngine);
	}
}