[Typo3] FCE and clean XHTML+CSS

[Emanuele Zattin]

Hello,
i'm developing a multilanguage website using Templavoilà.
I'd love to use FCE to insert contents, possibly using images as headers. 
I know Templavoilà can create image headers automatically like this:

<img src="path of the created image" alt="some alt text here" />

but it's not as clean as i'd want it to be:

<h3 style="background:url("path of the created image"); 
height:[height of image]; width:[width of image];"><span 
style="display:none;">My Header: Yeah, it is text!</span></h3>

This would be visible also on text only devices and would look great on 
small screens disabling CSS. Is this possible? Any hint?

Thank you all for your attention!

Emanuele Zattin