function VerifyTreeCapability() {
	var browserName = ' ' + navigator.userAgent.toLowerCase();
	var pos = browserName.indexOf('msie');
	if (pos > 0) {
		if (parseInt(browserName.substring(pos+4)) < 5)
			return false;
	} else {
		var pos = browserName.indexOf('mozilla/');
		if (pos > 0) {
			if (parseInt(browserName.substring(pos+8)) < 5)
				return false;
		}
	}
	if (typeof(document.getElementById) == 'function' ||
		document.getElementById('treeCap') != null)
	{
		if (typeof(Array.prototype.join) == 'function' &&
			typeof(String.prototype.split) == 'function' &&
			typeof(document.forms[0].style.display) == 'string')
		{
			document.forms[0].elements["treecapable"].value = "1";
			return true;
		}
	}
	return false;
}