function subscribe(email)
{
	if(email.length==0)
	{
		return;
	}
	xmlhttp=GetXmlHttpObject();
	if(xmlhttp==null)
	{
		alert("Your browser does not support XMLHTTP!");
		return;
	}
	var url="subscribe.php?email="+email+"&sid="+Math.random();
	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}
function stateChanged()
{
	if(xmlhttp.readyState==4)
	{
		if(xmlhttp.responseText=="true")
		{
			document.getElementById("subscribe_email").value="Merci pour votre inscription !";
			window.setTimeout('document.getElementById("subscribe_email").value=""',2000);
		}
	}
}
function GetXmlHttpObject()
{
	if(window.XMLHttpRequest)
	{
		return new XMLHttpRequest();
	}
	if (window.ActiveXObject)
	{
		return new ActiveXObject("Microsoft.XMLHTTP");
	}
	return null;
}