docbook HTML rendering

[Erwan de FERRIERES]

Hi all,

as you may have see, I have corrected the HTML rendering for caution, 
etc... in docbook. It is now using the right syntax, as told by the DTD.

http://svn.apache.org/viewvc?rev=1075125&view=rev

I've also added some CSS styles, which are just here for decoration... 
If anyone could take a look and create the right style for each theme, 
this would be a nice addition.

Thanks,

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Erwan de FERRIERES
www.nereide.biz