moved from using .attr() to .prop() in JS so I can move to new version of jQuery
fixed eligibility check to scan the correct directory
removed last use of .attr() jQuery method
fixed path for audio files (must be in 'Experiment/')
fixed audio file path, moved to .attr() from .prop() in jQuery
removing obviously unnecessary css
timing is more accurate, faster, and should be more reliable on slower machines

added JS toggle that will show the value of the timer being used (turning on timer display is more cpu intensive)
cleaning up css