Run eventTrack on window load, after all document.ready functions have already run
Workaround odd namespaced jQuery bug

Where lp.jQuery(thisButton).is('.lp-pom-form .lp-pom-button') was always passing as true the first time
Fix anchor links not having handler re-applied after first click
Separate into two functions, eventTrack and eventTrackHandler

This way eventTrack (API) can be called any time, to call eventTrackHandler on window load. eventTrackHandler can then be called at any subsequent time to be run immediately (like re-adding of handler after first click)