get two check-boxes value

I have two checkboxes which I have to run 3 different functions depending on what's checked by the user.

However I don't seem to be able to get the values correctly:

$('#checks').click(function(e) {
  if (!$('#different-billing-address').is(":checked") && $('#ccheck').is(":checked")) {
    openform();
  }

  if ($('#different-billing-address').is(":checked") && !$('#ccheck').is(":checked")) {
    hideocp();
  }

  if (!$('#different-billing-address').is(":checked") && !$('#ccheck').is(":checked")) {
    samedelivery();
  }

});

Can someone explain to me why is this not working?

Thank you!