def reset
			self.clear
			me = self
			@default_values.each {|n,v| me[n] = v.is_a?(Class) ? nil : v}
		end
def reset
			self.clear
			me = self
			@default_values.each {|n,v| me[n] = v.is_a?(Class) ? nil : v}
		end
reset values back to defaults