Removed old code. No longer using window load method. Bug fix.

* Old code that used to populate an array with data from playback.js.php
has been removed
* No longer using the window load method to setup some timers
* Bug fix: Fixed a bug in playEvent where the monitorId check was
incorrect so it resulted in multiple instances of cameras being
displayed. Now it checks the typeof and if it's incorrect it converts
it.