function mailTest(exp_reg)
			{
			Expression = new RegExp("^[A-Za-z0-9-_.]+\\@[A-Za-z0-9-_%&\?\/.=]+\\.[A-Za-z0-9]+$","gi");
			if(!Expression.test(exp_reg))
				{
				return false;
				}
			else
				{
				return true;
				}
			}

function invite_auteur() {
  var url = BASEHREF+'include/inviter_auteur.php';
  var mail = $('invite_auteur').value;
  if (mailTest(mail)) {
    var variables = '&mail='+mail;
    new Ajax.Request(url, {
  	method: 'post',
  	onSuccess: function(transport) {
  		/*if (transport.responseText != "ok") {*/
  			$('rep_invite').innerHTML = transport.responseText;
  		/*}*/
  	},
  	parameters:variables
    });
  }
}