Hide the date part on a DateTime field

Question

I would like to have a time-only field on my CRM form. As it is apparently not possible, I plan to use a DateTime field and hide the date part (circled in red on the following image).

How can I hide the date part on a DateTime field using Javascript ?

Answer 1

Found it:

// Set the date in order to be able to modify the time
document.getElementById("field_name").DataValue = new Date(2000, 1, 1);
// Hide the date part
document.getElementById("field_name").childNodes[0].childNodes[0].style.display =
    "none";
document.getElementById("field_name").childNodes[0].childNodes[1].style.display =
    "none";