Display xul files in Firefox

[Craig White]

On Sat, 2008-12-13 at 15:09 -0500, Dave Feustel wrote:
> I copied this file (ex-01.html) from the book _Programming Firefox_,
> but Firefox displays this file as a blank page. 'view page source'
> shows the data as I entered it. What's wrong with the file (or file
> name)? 
> 
> Thanks.
> 
> =====================
> <?xml version="1.0"?>
> <?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
> <window
>         id="theWindow"
>         title="The Window"
>         orient="horizontal"
>         width= "400"
>         height = "300"
>         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
>         xmlns:html="http://www.w3.org/1999/xhtml"
> >
> 
> <hbox>
>   <label value="label 1"/>
>    <label value="label 2"/>
>     <label value="label 3"/>
> </hbox>
> <vbox>
>   <label value="label 4"/>
>    <label value="label 5"/>
>     <label value="label 6"/>
> </vbox>
> </window>
----
run xmllint on the file to check it (libxml2 package)

Craig