xsl:if

Hi,
 If the attribute value from the input xml is optional. how do i write my
xsl:if so that if the value is present get the value else default to
"unknown"

Example, if my input xml is like this
<check value="123" phone="1112223333"/>
since value is optional if want to provide an if condition if value not
present use "unknown" else use @value

Thanks,

-----Original Message-----
From: Joris Gillis [mailto:roac@xxxxxxxxxx]
Sent: Monday, January 17, 2005 4:14 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re:  format strings


Tempore 21:55:10, die 01/17/2005 AD, hinc in
xsl-list@xxxxxxxxxxxxxxxxxxxxxx scripsit Luke Shannon
<lshannon@xxxxxxxxxxxxxxx>:

> I wonder if I could use the same function to sub a <p> for a <fo:block>
> in a string?
No, 'translate()' can only substitute single characters.


regards,
--
Joris Gillis (http://www.ticalc.org/cgi-bin/acct-view.cgi?userid=38041)
"Et ipsa scientia potestas est"  - Francis Bacon , Meditationes sacrae