$(function(){
	Calendar.setup({
	    inputField     :    "start_datetime",   // id of the input field
	    ifFormat       :    "%d-%m-%Y %H:%M",       // format of the input field
	    showsTime      :    true,
	    timeFormat     :    "24"
	});
	Calendar.setup({
	    inputField     :    "end_datetime",   // id of the input field
	    ifFormat       :    "%d-%m-%Y %H:%M",       // format of the input field
	    showsTime      :    true,
	    timeFormat     :    "24"
	});
});