 tok[5] != last_pans[tidx]) {
                last_vols[tidx] = tok[4];
                last_pans[tidx] = tok[5];

                if (g_inspect_tridx == tidx) {
                  var volf = document.getElementById("trackinspect_volf");
                  var volh = document.getElementById("trackinspect_volh");
                  setTextForObject(volh, mkvolstr(tok[4]));

                  var vol = parseFloat(tok[4]);
                  vol = vol < 0.0000001 ? -150 : Math.log(vol)*8.68588963806;
             