Page content, create div arund images, how?

[mvlcek]

Hi.

When user creates a page and puts an image on it, the result is currently this:

Code:

<p>
   <img src="" alt="">
</p>

I'd like to change this so, that GetSimple would automagically create a div around it, like this:

Code:

<p>
   <div id="content-image">
     <img src="" alt="">
   </div>
</p>

That would make some css-things easier to do, I hope.
How can I achieve this? What to edit and how?

I hope you know that this is invalid HTML - no div is allowed inside a p.