How would I go about adding an input mask to my calendar control

I'm using JDOM and have found where the input control

I want to add an input mask of "dd-mm-yyyy" so my user knows what date format to use.

Is the best way to do this via jQuery or is there a super easy way to do it in jDOM?

my input code is :


echo JDom::_('html.form.input.calendar', array(
'dataKey' => 'dob',
'dataObject' => $this->krfchildrenitem,
'dateFormat' => "%d-%m-%Y",
'domClass' => "validate[required,custom[timeddmmYYYY]]",
'validatorHandler' => "timeddmmYYYY",
'required' => true
));