[Riim]

Object.isEmpty = function(self) {
	if (self == null) return false;//
	if (self instanceof Array || typeof self == 'string') return !self.length;
	var empty = new self.constructor();
	for (var key in self) {
		if (!(key in empty) || self[key] !== empty[key]) return false;
	}
	return true;
};