var brversion = navigator.userAgent;
var brversion2 = navigator.appVersion;

	var footbox = document.getElementById('footer');
	var rrbox = document.getElementById('rightrail');
	var footpos = footbox.offsetTop;
	var maxht=footpos-223;

maxht = "height: " + maxht + "px;";
rrbox.style.cssText = maxht;