$.fn.test = function () {			    	

	$("select[@name='session_subscribe_promotional_code'] ").change(function(){
	$("#blockV16").hide();
	if($(this).val() == "Other") $("#blockV16").show();
	});

	$("input[@name='session_subscribe_rate_plan'] ").change(function(){
	$("#blockOptServ").hide();
	if($(this).val() == "57") $("#blockOptServ").show();
	});
};