var http_request = false;
function makeHTTPRequest(url, parameters) {
   http_request = false;
   if (window.XMLHttpRequest) { // Mozilla, Safari,...
      http_request = new XMLHttpRequest();
      if (http_request.overrideMimeType) {
         http_request.overrideMimeType('text/html');
      }
   } else if (window.ActiveXObject) { // IE
      try {
         http_request = new ActiveXObject("Msxml2.XMLHTTP");
      } catch (e) {
         try {
            http_request = new ActiveXObject("Microsoft.XMLHTTP");
         } catch (e) {}
      }
   }
   if (!http_request) {
      alert('Cannot create XMLHTTP instance');
      return false;
   }
   http_request.onreadystatechange = alertContents;
   http_request.open('GET', url+'?'+parameters, true);
   http_request.send(null);
}

function alertContents() {
 if (http_request.readyState == 4) {
  if (http_request.status == 200) {
   result = http_request.responseText;
   if(result)
    document.getElementById('dropresults').innerHTML = result;
  } else {
   alert('There was a problem with the request.');
  }
 }
}

function findLocalEvents(zip){
 makeHTTPRequest('http://gojoin.com/includes/php/http-post/find-local-events.php',"zip="+encodeURI(zip));
}

function joinMailingList(){
 var ml=arguments[0];
 var subdot='';
 if(arguments[1])
  subdot=arguments[1]+'.';
 document.getElementById("mailinglisterror").style.visibility="hidden";
 if(validateEmail("mailinglistemail")!=false){
  document.getElementById("mailinglistemail").disabled=true;
  document.getElementById("mailinglisthide").style.visibility="hidden";
  document.getElementById("mailinglisttext").innerHTML="Thank you for joining the mailing list!";
  makeHTTPRequest('http://'+subdot+'gojoin.com/includes/php/http-post/mailing-list.php',"email="+encodeURI(document.getElementById("mailinglistemail").value)+"&ml="+ml);
 }else{
  document.getElementById("mailinglisterror").style.visibility="visible";
 }
 return false;
}