function checkEmail (s_email) {	if ((s_email.length >= 6)&&(s_email.indexOf('@') > -1)&&(s_email.indexOf('@') < s_email.lastIndexOf('.'))&&( (s_email.lastIndexOf('.') - s_email.indexOf('@')) > 2)) {		return true ;	} else {		return false ;	}}function checkForm() {	if ((checkEmail(document.mrof1.f_expEmail.value) == '')||(checkEmail(document.mrof1.f_destEmail.value) == '')) {		alert('les champs email sont obligatoires.');		return false ;	} else {		return true ;	}}