function subscribe() {
 if (getInput('email') != '') {

  if ((getInput('email').indexOf('@') > -1) && (getInput('email').indexOf('.') > -1)) {
   //enregistrement de l'email
   var http = createRequestObject();
   var params = "email="+getInput('email');

   http.open('GET', 'mailing.php?'+params, true);
   http.onreadystatechange = function()
   {
    if (http.readyState == 4) {
     if (http.responseText == 'OK') {
      //affichage du sticker
      document.getElementById('form_newsletter').style.display = 'none';
      document.getElementById('wegotit').style.display = 'block';
     }
     else {document.getElementById('newsletter').innerHTML = http.responseText;}
    }
    else {}
   };
   http.setRequestHeader("Content-type", "text/html; charset=ISO-8859-1");
   http.send(null);
  }
 }
}

function getInput(id) {
 if (document.getElementById(id).value) {
  return document.getElementById(id).value;
 }
 else {
  return '';
 }
}

function createRequestObject()
{
 var ro;
 ro = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
 return ro;
}

function showhide(elt) {
 if (elt.className == 'show') {elt.className = 'hide';}
 else {elt.className = 'show';}
}