10. A system as set forth in claim 9 wherein said second query includes a parameter value for a tag present in said XML but not present in said HTML, said first query not including a parameter value for said tag, such that said second query is limited to data associated with said tag in XML documents whereas said first query is not limited to data associated with said tag.
9. A system as set forth in claim 8 wherein said first document language is HTML and said second document language is XML.