in xslt1  or a basic xslt2 processor, the attribute value is a string
and not subject to namespace processing, so you can't ask for the local
name, but you can ask for the substring after the :
substring-after(@type,':')
If you use a schema-ware XSLT2 processor and schema validate the input,
so that @type has type QName then you could use local-name(@type/data())

David