function initialiseNavBar() {
	setVariables();
	checkLocation();
}

function setVariables() {
	if (document.layers) {
		v=".top=";
		dS="document.";
		sD="";
		y="window.pageYOffset";
	}
	else if (document.all){
		v=".pixelTop=";
		dS="";
		sD=".style";
		y="document.body.scrollTop";
	}
	else if (document.getElementById){
		y="window.pageYOffset";
	}
}

function checkLocation() {
	var object="NavBar";
	var yy=eval(y);
	if (document.getElementById) 
		document.getElementById("NavBar").style.top=yy;
	else
		eval(dS+object+sD+v+yy);
		setTimeout("checkLocation()",10);
}