Navigation Timing test cases

We have submitted a few additional test cases for NavigationTiming:
http://test.w3.org/webperf/tests/submission/Microsoft/NavigationTiming/

These tests use the testharness.js provided in the resources folder, so they should perform similarly to Zhiheng's test case.  I tried to add a short description and setup steps at the top of the page.

These tests are very simple:

*         mstestharness.js: Helper functions used by several of the tests

*         test_navigation_attributes_exist.htm: Checks the existence of performance.navigation attributes

*         test_navigation_redirectCount_none.htm: Checks the redirectCount and redirectStart/redirectEnd in the case of a non-redirected navigation

*         test_navigation_type_enums.htm: Checks the existence and values of navigation.type enums

*         test_navigation_type_reload.htm: Has the user hit Reload and checks navigation.type

*         test_timing_attributes_exist.htm: Checks the existence of performance.timing attributes

*         test_timing_attributes_ordering_simple.htm: Instructs the user how to start the test (click a link)

*         test_timing_attributes_ordering_simple_test.htm: Checks the values (ordering) of the timing attributes, during the page load and during/after the onload event handler

*         test_timing_unloadEvent.htm: Instructs the user how to start the test (click a link)

*         test_timing_unloadEvent_test.htm: Checks the value of the unloadEventStart/End coming from a previous page on the same domain

These tests are by no means exhaustive or complete.  Looking forward to any feedback on the style and approach!

- Nic