Rehydrating a flattened heirarchy

[wxdqz]

I'm trying to use XSLT to rehydrate a flattened heirarchy like:<para style="Heading1">blah...</para><para style="Heading2">blah...</para><para style="Heading2">blah...</para><para style="Heading1">blah...</para>back into something like the original:<Doc><Heading1><content>blah...</content><Heading2><content>blah...</content></Heading2><Heading2><content>blah...</content></Heading2></Heading1><Heading1><content>blah...</content></Heading1></Doc>I've been looking around for examples of solutions to this type of problem,but everything promising leads to a dead link. If anybody could point metoward a good example, or give me direct suggestions, I would be greatlyappreciative.Regards,RBW