var xhr = null;

//Créons une fonction de création d'objet XMLHttRequest
function get_Xhr()
 {
  if(window.XMLHttpRequest)
   {
    xhr = new XMLHttpRequest();
   }
  else if(window.ActiveXOject)
   {
    try
     {
      xhr = new ActiveXObject("Msxml2.XMLHTTP");
     }
    catch(e)
     {
      try
       {
        xhr = new ActiveXObject("Microsoft.XMLHTTP");
       }
      catch(el)
       {
        xhr = null;
       }
     }
   }
  return xhr;
 }
 
function ajaxmail()
 {
  get_Xhr();
  xhr.onreadystatechange = function()
   {
    if(xhr.readyState == 4 && xhr.status == 200)
     {
      document.getElementById('aff_mail').innerHTML = xhr.responseText;
     }
   }
  xhr.open("POST",'verif_mail.php',true);
  xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
  // Nous recuperons la valeur du input email from
  temp = document.getElementById('mail_from').value;
  // Et on l'envoie à verifmail.php
  xhr.send("mail="+temp);
 }
 
function ajax_min_length(id)
 {
  get_Xhr();
  xhr.onreadystatechange = function()
   {
    if(xhr.readyState == 4 && xhr.status == 200)
     {
      document.getElementById('aff_'+id).innerHTML = xhr.responseText;
     }
   }
  xhr.open("POST",'verif_min_length.php',true);
  xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');

  temp = document.getElementById(id).value;
  xhr.send("tmp="+temp);
 }
 
function ajax_antispam()
{
  get_Xhr();
  xhr.onreadystatechange = function()
   {
    if(xhr.readyState == 4 && xhr.status == 200)
     {
      document.getElementById('aff_antispam').innerHTML = xhr.responseText;
     }
   }
  xhr.open("POST",'verif_antispam.php',true);
  xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');

  temp = document.getElementById('captcha').value;
  resu = document.getElementById('test').value;
  xhr.send("tmp="+temp+"&resu="+resu);
 }

function envoieRequete(id,value)
{
get_Xhr();
xhr.onreadystatechange = function()
   {
    if(xhr.readyState == 4 && xhr.status == 200)
     {
      document.getElementById(id).innerHTML = xhr.responseText;
     }
   }
xhr.open("POST",'news.php',true);
xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
xhr.send("p="+value);

}