Fix PHP5 Notice

Without this, PHP5 will blame about _GET[page] not being set.
Fix typo

I hope it's a typo.
Fix PHP5 Notice

More to come I'm afraid.
Fix HTML

Some HTML errors.
Add more tag functionality

Updated a lot on tag functionality. Personally I think it works pretty
awesome right now.
Fix and add a lot.

You find out what I changed; it's a lot.