e = function (e) { e.preventDefault(); }

      last_titles[tidx] = null;
      last_vols[tidx] = null;
      last_flags[tidx]=null;
      wwr_req("TRACK/"+tidx);
      if (tidx==0) { 
        var c = document.getElementById("trackinspect_arm");
        c.innerHTML = "main<br>out";
        c.style.background = last_out_states[0] ? "#88f" : "#fff";

        c=document.getElementById("trackinspect_mon");
        c.innerHTML = "aux<br>out";
        c.style.background = last_out_states[1] ? "#88f" : "#fff";

  