function newsletterSend(def_val,err_msg )
{

	var regex = /^[a-zA-Z0-9._-]+@([a-zA-Z0-9.-]+\.)+[a-zA-Z0-9.-]{2,4}$/;
	var checkMsg = '';
		if ($('newsletter_mail').value=='') {
			checkMsg = def_val;
		}
		else if(regex.test($('newsletter_mail').value)==false){
			checkMsg = err_msg;
		}

	if(checkMsg) {
		alert (checkMsg);
		return false;
	}
	
	$('newsletter_form').set('send', {onSuccess: newsletterAnswer});
	$('newsletter_form').send();	
	return false;
}

function newsletterAnswer(res)
{
	ret = JSON.decode (res);
	if (ret['msg']) {
		alert (ret['msg']);
	}
	/*if (ret['success'] == 1) {
		$('newsletter_form').mail.value = $('newsletter_val').value;
	}
	*/
}