function postDatas_newsletter( email, op ) {
	$newsletterContent = $("#newsletterContent");
	$.ajax( {	type: "POST",
				url: "newsletter.php",
				data: { 
					"nl_email" : email,
					"nl_op" : op,
					"widget" : 'newsletter'
				},
				success: function( data, textStatus ) { $newsletterContent.html( data ) },
				error: function( data ) { alert( "postAjax : erreur !"); }
			} );
}

function validate_newsletter() {
	var email = document.mainForm.nl_email.value;
	var op = document.mainForm.nl_op.value;
	postDatas_newsletter( email, op );
}

function reset_newsletter() {
	postDatas_newsletter( "", "" );
}