function saveemail(){
  var emailaddress = $F('emailfield');
  if(emailaddress == '') {
    return false;
  } else {
    var myAjax = new Ajax.Request( 'emailsignup.php',{method: 'post', parameters: 'emailaddress=' + emailaddress, onComplete: ajax_response});
  }
  return false;
}

function ajax_response(originalRequest) {
  var xmlobject;
 if (document.implementation.createDocument){ 
   // Mozilla, create a new DOMParser 
   xmlobject = (new DOMParser()).parseFromString(originalRequest.responseText, "text/xml");
 } else if (window.ActiveXObject){ 
   // Internet Explorer, create a new XML document using ActiveX 
   // and use loadXML as a DOM parser. 
   xmlobject = new ActiveXObject("Microsoft.XMLDOM") 
   xmlobject.async="false"; 
   xmlobject.loadXML(originalRequest.responseText);   
 } 
  var stateElement = xmlobject.getElementsByTagName('state')[0];
  var success = stateElement.getAttribute("success");
  if(success == 'true'){
     $('emailform').innerHTML = '<div id="emailtext">Thanks, we will email you when the new site is available!</div>' ;
     //$('emailsubmit').style.display = "none";
  } else {
  // invalid email
  var emailinput = $('emailfield');
  emailinput.value =  "Invalid Email";
  }
}