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Firefox has events that fire when a page goes into back/forward cache, or out of it. See <https://developer.mozilla.org/en/Using_Firefox_1.5_caching>.
We need to support this.
<rdar://problem/6440869> Implement pageshow and pagehide events for b/f cache
Created an attachment (id=38650) [details]
(From update of attachment 38650 [details])