/* ---------------------------- */
/* XMLHTTPRequest Enable */
/* ---------------------------- */
function createObject() {
 var request_type;
 var browser = navigator.appName;
 if(browser == "Microsoft Internet Explorer"){
  request_type = new ActiveXObject("Microsoft.XMLHTTP");
 }else{
  request_type = new XMLHttpRequest();
 }
 return request_type;
}

var http = createObject();

/* -------------------------- */
/* LOGIN */
/* -------------------------- */
/* Required: var nocache is a random number to add to request. This value solve an Internet Explorer cache issue */
var nocache = 0;
function contact_ajax() {
 // Optional: Show a waiting message in the layer with ID ajax_response
 document.getElementById('status').innerHTML = "Sending email, please wait... (This can take up to 30 seconds)."
 document.getElementById('submit').innerHTML = '';
 // Required: verify that all fileds is not empty. Use encodeURI() to solve some issues about character encoding.
 var fullname = encodeURI(document.getElementById('fullname').value);
 var email = encodeURI(document.getElementById('email').value);
 var regarding = encodeURI(document.getElementById('regarding').value);
 var message = encodeURI(document.getElementById('message').value);
 // Set te random number to add to URL request
 nocache = Math.random();
 // Pass the login variables like URL variable
 http.open('get', '/sendmail.php?fullname='+fullname+'&email='+email+'&regarding='+regarding+'&message='+message+'&nocache = '+nocache);
 http.onreadystatechange = contact_ajax_reply;
 http.send(null);
}

function contact_ajax_reply() {
 if(http.readyState == 4){ 
  var response = http.responseText;
  if(response == 0){
   // if login fails
   document.getElementById('errormsg').innerHTML = 'Email not sent. Please make sure all fields were filled out. Thank you.';
   document.getElementById('status').innerHTML = '';
   document.getElementById('submit').innerHTML = '<input type="submit" value="Submit">';
  // else if login is ok
  } else {
   document.getElementById('quickcontact').innerHTML = '';
   document.getElementById('status').innerHTML = 'Your message has been sent. Thank you!';
  }
 }
}