jQuery offers the .hide() method for this purpose. Simply select the element of your choice and call this method afterward. For example:
$('#comanda').hide();
One can also determine how fast the transition runs by providing a duration parameter in miliseconds or string (possible values being 'fast', and 'slow'):
$('#comanda').hide('fast');
In case you want to do something just after the element hid, you must provide a callback as a parameter too:
$('#comanda').hide('fast', function() {
alert('It is hidden now!');
});