text

I just compiled the most recent version of Mozilla with SVG 
functionality.  When I checked the status,
the text element is implemented.  But when I did a test the text could 
not rendered with mozilla. 
The exact file can be rendered by IE. 

here is my simple test file

<?xml version="1.0" standalone="no"?>
<svg version="1.1"
     xmlns="http://www.w3.org/2000/svg" 
xmlns:xlink="http://www.w3.org/1999/xlink">
<rect x="10" y="20" width="100" height="30" />
                                                                                

<text x="40" y="100" font-size="50">
   Some thing
   <tspan onload="alert(evt.target.getComputedTextLength())">
      Scalable Vector Graphics</tspan>
</text>
                                                                                

</svg>

----------------------
I simple rect object was inclded to demonstrate that SVG is working with 
my mozilla build.
Am I missing something on my Linux computer, such as font etc?

Kemin