function trim(chaine)
{
	return chaine.replace(/^\s+/g,'').replace(/\s+$/g,'');
} 

function isValidEmail(chaineAtester){
	var reg_exp = /^[a-z0-9._-]+@[a-z0-9.-]{2,}[.][a-z]{2,3}$/;	
	if (reg_exp.exec(chaineAtester)==null){
		return false;
	}else {
		return true;
	}	
}

function validePostCommentaire(){
	var retour = true;
	if (trim($F('titleCommentaire'))==""){
		$('titreObligatoire').style.visibility = "visible";
		retour = false;
	}else {
		$('titreObligatoire').style.visibility = "hidden";
	}
	if (!isValidEmail($F('email'))){
		$('emailObligatoire').style.visibility = "visible";
		retour = false;
	}else {
		$('emailObligatoire').style.visibility = "hidden";
	}	
	if (trim($F('commentaire'))==""){
		$('commentaireObligatoire').style.visibility = "visible";
		retour = false;
	}else {
		$('commentaireObligatoire').style.visibility = "hidden";
	}
	
	return retour;
}