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

	if (isDOM) {
		yMenuFrom = parseInt (divMenu.style.top,0);
		yMenuTo = (isNS ? window.pageYOffset : document.body.scrollTop);
	}
	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,0) + yOffset;
		timeoutNextCheck = 5;
	}
	setTimeout ('moveRightEdge()', timeoutNextCheck);
}