function ajax()
{
    if (window.XMLHttpRequest) { 
        xhr = new XMLHttpRequest();
    }
    else if (window.ActiveXObject) 
    {
        xhr = new ActiveXObject("Microsoft.XMLHTTP");
    }
	else{
      alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest...");
      xhr = false;
   } 
}

function insertion(email)
{
ajax();
xhr.onreadystatechange = function()
{
if(xhr.readyState == 4 && xhr.status == 200)
{
document.getElementById('cadre_newsletter_contenu').innerHTML=xhr.responseText;
}
else {
	document.getElementById('cadre_newsletter_contenu').innerHTML="<center><img src='http://www.choisirmonmobile.com/images/loadfushia.gif'></center>";
	}
}

	
 xhr.open("GET","http://www.choisirmonmobile.com/inc/pages/insertion_newsletter.php?email="+email,true);

 xhr.send(null);

 
}

function verifEmail()
{
var mail=document.getElementById('champ').value;	
var re=RegExp("^([a-zA-Z0-9_-])+([.]?[a-zA-Z0-9_-]{1,})*@([a-zA-Z0-9-_]{2,}[.])+[a-zA-Z]{2,3}$");

if(!re.test(mail))
{
alert("Cette adresse n'est pas valide");
return false;
}
else
{
insertion(mail);
}
	
}