// JavaScript Document


function getHTTPObject() {

  var xmlhttp;

/*@cc_on

  @if (@_jscript_version >= 5)

  try {

    xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");

  } catch (e) {

    try {

      xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

    } catch (E) {

      xmlhttp = false;

    }

  }

  @else

    xmlhttp = false;

  @end @*/

  if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {

    try {
		
		

      xmlhttp = new XMLHttpRequest();
	  

    } catch (e) {

      xmlhttp = false;
	  

    }

  }

  return xmlhttp;

}


var url = "CityStateLookupByZip.do?billingPostalCode=";

var isWorking = false;

var http = getHTTPObject();



function handleHttpResponse() {
	

  if (http.readyState == 4) {
	  
	  

    isWorking = false;

    if (http.responseText.indexOf('invalid') == -1) {
		
			if (http.responseText.indexOf('colorado') > -1) {
		
		document.getElementById('billingCity').value = "";
        document.getElementById('billingState').value = "";
		alert("We're sorry, but there are no longer Free Trials available in your area.");
		
		} else {
		
 		var xmlDocument = http.responseXML;

      	var city = xmlDocument.getElementsByTagName('city').item(0).firstChild.data;

      	var state = xmlDocument.getElementsByTagName('state').item(0).firstChild.data;

      	document.getElementById('billingCity').value = city;

      	document.getElementById('billingState').value = state;
	  
		isWorking = false;
		}

    }
	
	else if (http.responseText.indexOf('invalid') > -1) {
		// reset form fields
		document.getElementById('billingCity').value = "";
        document.getElementById('billingState').value = "";
	}
	
	

  }

}

function updateCityState() {

  if (!isWorking) {

    var zipValue = document.getElementById("billingPostalCode").value;

    http.open("GET", url + escape(zipValue), true);

    isWorking = true;

    http.onreadystatechange = handleHttpResponse;

    http.send(null);
	

  }
  

}

function validateFiveDigitZipCode(zip) {


    if (zip.length != 5) {
        alert("Please enter your 5 digit ZIP code.");
		document.getElementById("billingPostalCode").value ="";
		document.getElementById("billingCity").value ="";
		document.getElementById("billingState").value ="";
        return false;
    }

   var zipString = new String(zip);
     var invalidChars = "!@#$%^&*()-~,'<.>/?;:\|";
    for (var i = 0; i < zipString.length; i++) {
        var c = zipString.charAt(i);
        if (invalidChars.indexOf(c) != "-1") {
            alert("Invalid characters in your zip code.  Please try again.");
            return false;
        }
    }

    return updateCityState(),show();

}

function show(){
	
		document.getElementById('hideState').style.display = "";
		document.getElementById('hideCity').style.display = "";
	
}