function sendForm(el) {
	var form = document.forms[el];
	var flag = false;
	var bad_mes = '';

	var message = document.getElementById('message');
	if(message.value == '') { 
		bad_mes = bad_mes + 'Please, enter the Message:\n';
		flag = true;
	}
	
	var email = document.getElementById('mail');
	if(email.value == '') {
		bad_mes = bad_mes + 'Please, enter E-mail or telephone:\n';
		flag = true;
	}
	
	if(!flag) {
		form.submit();
	}
	else {
		alert(bad_mes);
	}
}