Page History: How do I scrape the viewstate or other hidden variable?

Compare Page Revisions

7 6 5 4 3 2 1 0 Current 7 6 5 4 3 2 1 0

#	Revision	Comment	User
	Current Revision - 2009/06/10 18:20		craig
7	2009/06/10 18:18		craig
6	2009/06/10 18:16		craig
5	2009/06/10 18:11		craig
4	2009/06/10 18:10		craig
3	2009/06/10 18:08		craig
2	2009/06/10 18:06		craig
1	2009/06/10 17:55		craig
0	2009/06/10 17:32		craig