Read, parse, and slide through multiple GPX files.
Store filename with data.
Add Google Maps visualization of position.
Click on map to get readings closest to point.
Show delta between tracks at given time/distance.
Draw a red path over the first set of tracks.
Show highcharts graph of time difference over distance.
Rotate through marker icons.
Update slider/map on mouseover graph.
Debugging area.
Hide empty select.
Merge branch 'master' of github.com:vincebusam/GPXRace