function valider_newsletter() {
     var isValid = true;
     
     $('#soumettre').removeClass('error');
     
     if (!$('#abonner').val() || !is_email_valid($('#abonner').val())) {
	  isValid = false;
	  $('#abonner').addClass('error');
     }
     
     if (isValid) {
	  
	  send_email_DB();
	  
     }
     
     return false;
     
}

// Validation du courriel
function is_email_valid(email) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = email;
   if(reg.test(address) == false) {
      return false;
   }
   else {
   		return true;
   }
}

// Envoie les données à send_newsletter_user.php
function send_email_DB() {
     
     var email = $('#abonner').val();

     path_to_file = $('#url').val()+'/includes/send_newsletter_user.php';
     
     var oDate = new Date();
     $.ajaxSetup({
	  cache: false
     });

     $.ajaxSetup({ scriptCharset: "utf-8" ,contentType: "application/x-www-form-urlencoded; charset=UTF-8" });

     $.ajax({	
     url: path_to_file,
     data: {email:email},
     cache: false,
     type: "POST",
     success : function(text){
	  var output = '<div class="left reponse">'+text+'</div>';
	  //$(".left").empty().html(output);
	  $(".left").replaceWith(text);
     }
     });

}