function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 //Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}

var requete = null; /* On crée une variable globale qui contiendra l'objet XHR */

var loadstatustext1="<center><img src='images/loading.gif' /> <p style='color:#FFFFFF; font-size:10px; font-family:Verdana, Arial, Helvetica, sans-serif'>Chargement en cours...</p></center>" 


function article(str)
{
if (str.length==0)
  { 
  document.getElementById("articlepr").innerHTML="";
  return;
  }
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
var url="article.php";
url=url+"?id="+str;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChangedlien;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
} 

function stateChangedlien() 
{ 
if(xmlHttp.readyState  < 4)
 {
  document.getElementById("articlepr").innerHTML=loadstatustext1;
  }
if (xmlHttp.readyState==4)
{ 
document.getElementById("articlepr").innerHTML=xmlHttp.responseText;
}
}