// JavaScript Document

function subfunction(){
	var ao_firstname = document.getElementById('ao_firstname');
	var ao_email = document.getElementById('ao_email');
	var ao_tel = document.getElementById('ao_tel');
	if(ao_firstname.value == ""){
		alert("Full Name is empty");
		ao_firstname.focus();
		return false;
	}
	if(ao_email.value == ""){
		alert("email is empty");
		ao_email.focus();
		return false;
	}
	if(ao_tel.value == ""){
		alert("Phone Number is empty");
		ao_tel.focus();
		return false;
	}
	return true;
}