background for text

[dao]

hello,

I'd like to highlight a text element of my svg file:

<text transform="matrix(1 0 0 1 433.8965 494.4141)" style="fill:#00FFFF;
font-family:'CourierNewPSMT'; font-size:24;">00.00</text>


I cannot see any way to set the background of a text, or to get the box size
to draw a rectangle around it.

Do you know how I can do this?

regards


-- 
Dao Hodac