var isDOM = (document.getElementById ? true : false);
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);
var isNS = navigator.appName == "Netscape";

function getRef(id) {
	if (isDOM) return document.getElementById(id);
	if (isIE4) return document.all[id];
	if (isNS4) return document.layers[id];
}

function getSty(id) {
	x = getRef(id);
	return (isNS4 ? getRef(id) : getRef(id).style);
}

function moveRightEdge() {
	var yMenuFrom, yMenuTo, yOffset, timeoutNextCheck;

	if (isNS4) {
		yMenuFrom   = divMenu.top;
		yMenuTo     = windows.pageYOffset + 20;   // ?? ??
	} else if (isDOM) {
		yMenuFrom   = parseInt (divMenu.style.top, 0);
		yMenuTo     = (isNS ? window.pageYOffset : document.body.scrollTop) + 70; // ?? ??
	}
	timeoutNextCheck = 100;
//½ºÅ©·Ñ°Å¸®
	if (yMenuFrom != yMenuTo) {
		yOffset = Math.ceil(Math.abs(yMenuTo - yMenuFrom) / 20);
		if (yMenuTo < yMenuFrom)
			yOffset = -yOffset;
		if (isNS4)
			divMenu.top += yOffset;
		else if (isDOM)
			divMenu.style.top = parseInt (divMenu.style.top, 0) + yOffset;
			timeoutNextCheck = 0;
	}
	setTimeout ("moveRightEdge()", timeoutNextCheck);
}
if (isNS4) {
	var divMenu = document["divMenu"];
	divMenu.top = top.pageYOffset + 0;
	divMenu.visibility = "visible";
	moveRightEdge();
} else if (isDOM) {
	var divMenu = getRef('divMenu');
	divMenu.style.top = (isNS ? window.pageYOffset : document.body.scrollTop) + 320;
	divMenu.style.visibility = "visible";
	moveRightEdge();
}

function na_open_window(name, url, left, top, width, height, toolbar, menubar, statusbar, scrollbar, resizable)
{
  toolbar_str = toolbar ? 'yes' : 'no';
  menubar_str = menubar ? 'yes' : 'no';
  statusbar_str = statusbar ? 'yes' : 'no';
  scrollbar_str = scrollbar ? 'yes' : 'no';
  resizable_str = resizable ? 'yes' : 'no';
  window.open(url, name, 'left='+left+',top='+top+',width='+width+',height='+height+',toolbar='+toolbar_str+',menubar='+menubar_str+',status='+statusbar_str+',scrollbars='+scrollbar_str+',resizable='+resizable_str);
}