dtd

["xsl list" <xsl_list@xxxxxxxxxxx>]

I have an XML witch I need to validate. It contains something like:
<func name="func1" param0="val0" param1="val1"/>
<func name="func2" param2="val2" param3="val3"/>

In my DTD file I need to write a general rule which indicates that if 
@name='func1' then @param0 & @param1 are both REQUIRED, and if @name='func2' 
then @param2 & @param3 are both REQUIRED.
Can I get some help finishing the below dtd please?

<!ELEMENT func EMPTY>
<!ATTLIST func
	name (func1|func2) #REQUIRED
>
________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com


XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list