var stmnGAP1 = 100; // À§ÂÊ ¿©¹é 
var stmnGAP2 = 100; // ½ºÅ©·Ñ½Ã ºê¶ó¿ìÀú À§ÂÊ°ú ¶³¾îÁö´Â °Å¸® 
var stmnActivateSpeed = 25; 
var stmnScrollSpeed = 20; 
var stmnTimer; 

function refreshMenu(menuId) { 
	var stmnStartPoint, stmnEndPoint; 
	
	stmnStartPoint = parseInt(document.getElementById(menuId).style.top, 10); 
	stmnEndPoint = Math.max(document.documentElement.scrollTop, document.body.scrollTop) + stmnGAP2; 
	if (stmnEndPoint < stmnGAP1) stmnEndPoint = stmnGAP1; 
	
	if (stmnStartPoint != stmnEndPoint) { 
		stmnScrollAmount = Math.ceil( Math.abs( stmnEndPoint - stmnStartPoint ) / 15 ); 
		document.getElementById(menuId).style.top = parseInt(document.getElementById(menuId).style.top, 10) + ( ( stmnEndPoint<stmnStartPoint ) ? -stmnScrollAmount : stmnScrollAmount ) + 'px'; 
		stmnRefreshTimer = stmnScrollSpeed; 
	}
	
	stmnTimer = setTimeout("refreshMenu('"+menuId+"');", stmnActivateSpeed); 
} 

function menuTimer(menuId) {
	document.getElementById(menuId).style.top = 100 + 'px'; 
	refreshMenu(menuId);
}

function page_top() {
	 self.scrollBy(0,-1000)
}