$(function() {
	var dates = $( "#range_datepicker_from, #range_datepicker_to" ).datepicker({
		defaultDate: "+1d",
		changeMonth: true,
		numberOfMonths: 1,
		onSelect: function( selectedDate ) {
			var option = this.id == "range_datepicker_from" ? "minDate" : "maxDate",
				instance = $( this ).data( "datepicker" ),
				date = $.datepicker.parseDate(
					instance.settings.dateFormat ||
					$.datepicker._defaults.dateFormat,
					selectedDate, instance.settings );
			dates.not( this ).datepicker( "option", option, date );
		}
	});
});

function disabledField(event) {
	var theEvent = event || window.event;
	var key = theEvent.keyCode || theEvent.which;
	key = String.fromCharCode( key );
	var regex = /''/;
	if(!regex.test(key) && event.keyCode !== 9) {
		theEvent.returnValue = false;
		theEvent.preventDefault();
	}
}