3/4 Time Signature

[Atreyu92]

Frank, you should add smaller values for triplets

1/2 triplets
var opt = document.createElement("option");
opt.value = parseFloat(3/4);
opt.text = "1/"+String(opt.value*4);
document.getElementById('grid_select').add(opt)

1/4 triplets:
var opt = document.createElement("option");
opt.value = parseFloat(6/4);
opt.text = "1/"+String(opt.value*4);
document.getElementById('grid_select').add(opt)