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];
}

//var scrollerHeight = 88;
//var puaseBetweenImages = 3000;
//var imageIdx = 0;
     
function moveRightEdge() {
	var yMenuFrom, yMenuTo, yOffset, timeoutNextCheck;

	if (isDOM) {
		yMenuFrom   = parseInt (divMenu.style.top, 10);
		yMenuTo     = (isNS ? window.pageYOffset : document.body.scrollTop) + 0; // À§ÂÊ À§Ä¡
//jjj ³ôÀ̺¸Á¤
		if (yMenuTo<269) yMenuTo = 138;
	}

	timeoutNextCheck = 100;

	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, 10) + yOffset;
			timeoutNextCheck = 10;
	}
	setTimeout ('moveRightEdge()', timeoutNextCheck);
}

if (isDOM) {

  var divMenu = getRef('divMenu');
  divMenu.style.top = (isNS ? window.pageYOffset : document.body.scrollTop) + 0;
  divMenu.style.visibility = "visible";

  moveRightEdge();
}