$(document).ready(function() {
    $('#payexForm').validate({
		messages: {
		  participants: {
			required: "Required"
		  },
		  contact_email: {
			required: "Required",
			email: "Check your email"
		  },
		  parts_number: {
			number: "Endast siffror är tiilåtna", /* TXT_NOT_NUMBER */
			min: "Beloppet måste vara mer än 0kr" /* TXT_MIN */
		  }
		}
    });

    $('#parts_number').change(function() {
        updateTotal();
    });
});

function updateTotal() {
    var result = $('#base_price').val() * $('#parts_number').val();
    $('#total').html(result + ' ' + px_currency);
}