Coding a Javascript hidden message : I've been asked by a web company to give them around 30 lines of HTML/javascript code to be used for a wall display. The code would need to be a real piece of valid code that would execute in a modern browser and display a message of around 30 words or less (e.g. a clever/cheeky brand message for the company).

One big `document.write()` statement would do this, but they are looking for something that would conceal the message more. Essentially they are looking to make a visual puzzle that conceals their message from anyone without an intermediate understanding of JS.

To a layperson it should just look like random code.

I'm looking for ideas/suggestions on how to do this. I've tried using automatic javascript minifiers or obfuscators online but these generally output code that is completely unreadable to a human, what I want is for it to be difficult for a human/coder to read but not impossible.

Supposing the message to be hidden was: 

> "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent
> quis ipsum ipsum. Donec quis lectus et ante gravida ultricies at."

What might be a good/interesting way to do this?

HTML/CSS, JS & JQuery are all allowed.

(Moderators, please move this question to somewhere more appropriate if it's not right for stack overflow)