var bNetscape4plus = (navigator.appName == "Netscape" && navigator.appVersion.substring(0,1) >= "4");
var bExplorer4plus = (navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.substring(0,1) >= "4");
function CheckUIElements()
{
	var yMenuFrom, yMenuTo, yButtonFrom, yButtonTo, yOffset, timeoutNextCheck;
	var obj = document.getElementById('divMenu');
	
	yMenuFrom = obj.offsetTop;
	
	if ( bNetscape4plus ) {
		yMenuTo = top.pageYOffset + 300;
	} else if ( bExplorer4plus ) {
		yMenuTo = Math.max(document.documentElement.scrollTop, document.body.scrollTop) + 300;
	}

	timeoutNextCheck = 500;

	if ( yMenuFrom != yMenuTo ) {
		yOffset = Math.ceil( Math.abs( yMenuTo - yMenuFrom ) / 20 );
		if ( yMenuTo < yMenuFrom ) yOffset = -yOffset;
		var y = yMenuFrom + yOffset;
		obj.style.top = y + "px";
		timeoutNextCheck = 10;
	}
	setTimeout ("CheckUIElements()", timeoutNextCheck);
}
CheckUIElements();