Comparing comma seperated string in XSLT

Hello,

I am passing a parameter to XSLT which is comma
seperated value. e.g. depts = 1,2,3,4,5

XML source is 

<metaData>
  <docTitle>FooBar News</docTitle>
  <url>FooBar.html</url>
  <departments>22,2,23,236</departments>
</metaData>

Here any one deparment from depts string matches in
departments element then I want to to display this
News on the page. 

i.e. use string tokenizer on depts string get one
department and then do contains on <departments> 

Is it possible to do using XSLT?

Please help me.

Thanks.





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