$(document).ready( function() {
	
	processPMethod();
	$("#paymentMethod").change(processPMethod);
});

function processPMethod() {

	var me = (this === window) ? $("#paymentMethod") : $(this);
	
	if (me.attr("value") == "0") {
		$("#customPaymentMethod").show();
	} else {
		$("#customPaymentMethod").hide();
	}
}