The test is done

3 tests for movementX/Y are done (test #24,25,26)
I tried to retrieve the ePrevious's value directly, it costs me so long time and I'm still in confuse. So I use another way, create a variable to store the object and then compare with eNow.
Because movement is a dynamic implement, so the test won't take place as soon as others. User need to move the pointer in order to active the test.
For avoid thousands test result crush the browser, I limited the test in 4 times.