Sentence generator

Hi guys!

I wish to make a 1 page website, with in the middle a random sentence generator. Everytime you click on a ‘refresh’ or ‘next’ button you’ll get a new sentence.Something like this: http://watchout4snakes.com/wo4snakes/Random/RandomSentence

Idea is that I want to show random sentences, but 1 at a time.

Very simple, but I don’t know how I can make this.
Does anyone know how I can make this, do I need a Plugin or something?

Hope someone can help me. In return I will sing you a thank you song! 🙂

Regards,
Frenky