aMess["fr_PrenomVide"]								= "Vous devez saisir votre prénom.";


function checkNewsletterBirthday(theForm,sLang,formName,fieldName)
{
	var user_firstname = document.forms[formName].elements['user_firstname'].value;
	var user_lastname = document.forms[formName].elements['user_lastname'].value;
	
	if(user_firstname=='')
	{
		alert(aMess[sLang+"_NomVide"]);
		document.forms[formName].elements['user_firstname'].focus();
		return false;
	}
	else if(user_lastname=='')
	{
		alert(aMess[sLang+"_PrenomVide"]);
		document.forms[formName].elements['user_lastname'].focus();
		return false;
	}
	else if(checkMail(sLang,formName,fieldName))
	{
		
		openTarget (theForm, 'width=300,height=200,toolbar=0,menubar=0,status=0,scrollbars=0,resizable=1');
		return true;
	}
	else return false;
}