$(document).ready(function(){
	$("#submitButton").click(function(){
		var offerCode = "<p class='offer' style='display:none'>Here is your offer code: <b>A1CE-A73D-6882</b></p>";
		var field = $("#jamdock_serial_number");
		var serial = field.val();
		var manfId = serial.substr(0,2);
		var date = serial.substr(2,4);
		var year = date.substr(0,2);
		var month = date.substr(2,2);
		var prodId = serial.substr(6,4);
		
		if((serial.length == 15) && (year >= 9 && year <= 10) && (month > 0 && month <= 12) && (manfId == "A4") && (prodId == "1259")){
			$(".offer").replaceWith(offerCode);
			$(".offer").fadeIn("slow");
		}else if(serial.length < 15 || serial.length > 15){
			$(".offer").replaceWith("<p class='offer' style='display:none; color:red'>The serial number provided is the incorrect length</p>");
			$(".offer").fadeIn("slow");
		}else{
			$(".offer").replaceWith("<p class='offer' style='display:none; color:red'>The serial number is invalid</p>");
			$(".offer").fadeIn("slow");
		}
	});	
});