main frame - has 1 onunload handler(s) ALERT: State popped - FirstEntry (type string) ALERT: State popped - SecondEntry (type string) ALERT: Navigating back... main frame - has 1 onunload handler(s) ALERT: Last path component of location is document-destroyed-navigate-back.html?SecondEntryWillLaterBeReactivated ALERT: State popped - SecondEntryWillLaterBeReactivated (type string) ALERT: State popped - FirstEntryWillLaterBeReactivated (type string) ALERT: Test complete This test: -Builds up a list of state object entries with fragment URLs. -Navigates through them to verify that the popstate event is fired. -Navigates away to a new document, with the old document being destroyed. -Navigates back to the state object entries and verifies the popstate event is fired even on the new documents.