[support] Theme file input on webforms

[marolijo at yahoo.es]

Hello, I use to theme webforms as this: http://drupal.org/node/79086

I css inputs as this
#edit-submitted-esq-comentaris {
	width: 300px;
	height: 60px;
}

but I'm not able to theme the file input field I have now on a webform. 

In firebug I see:  
<input type="file" size="60" id="edit-adjunts" class="form-file"
name="files[adjunts]"/>

and I tried: 
#edit-adjunts {
	width: 350px;
}
..form-file{
	width: 350px;
}

It works on IE and Chrome but not FFox.

Any idea?

Thank's!

Pol Maresma
PolNetwork.com / Serveis d'Internet
pol(a)polnetwork.com
msn: marolijo