var menuactive = false;
function menucheck() {
	//document.write(navigator.platform + '<br>');
	//document.write(navigator.userAgent + '<br>');
	if (!document.getElementById) {
		return false;
	}
	var version, offset;
	offset = navigator.userAgent.indexOf('MSIE');
	if (offset != -1) {
		version = parseFloat('0' + navigator.userAgent.substr(offset + 5));
		if (version >= 5.0) {
	  		return true;
		}
		return false;
	}
	offset = navigator.userAgent.indexOf('Opera');
	if (offset != -1) {
		version = parseFloat('0' + navigator.userAgent.substr(offset + 6));
		if (version >= 5.02) {
	  		return true;
		}
		return false;
	}
	offset = navigator.userAgent.indexOf('Mozilla');
	if (offset != -1) {
		version = parseFloat('0' + navigator.userAgent.substr(offset + 8));
		if (version >= 5.0) {
	  		return true;
		}
		return false;
	}
	return false;
}
if (menucheck()) {
	menuactive = true;
}