Prove that the complement of $\{0^n1^n \mid n \geq{} 0\}$ is not regular using closure properties

I want to prove that the complement of $\{0^n1^n \mid n \geq{} 0\}$ is not regular using closure properties.

I understand pumping lemma can be used to prove that $\{0^n1^n \mid n \geq{} 0\}$ is not a regular language. I also understand regular languages are closed under complement operation. However, does that also imply that a non-regular language's complement is also non-regular?

• Just to explicitly state it, the proof would run along these lines: Towards a contradiction, let L be the complement of the given language. If L were regular then the complement of L, which is the given language: $\{0^n 1^n \mid n \geq 0\}$, would be regular as well by the property of regular languages being closed over the compliment operation. Therefore L is not regular. – JustAnotherSoul Sep 27 '12 at 2:39