// If track area is visible, update track data.
document.getElementById("trackLength").textContent = calcTrackLength().toFixed(1);
document.getElementById("trackDuration").textContent = Math.round(calcTrackDuration()/60);
// If track area is visible, update track data.
document.getElementById("trackLength").textContent = calcTrackLength().toFixed(1);
document.getElementById("trackDuration").textContent = Math.round(calcTrackDuration()/60);