// JavaScript Document
function validateEmpty() {	
	if(document.getElementById("firstname").value.length==0){
		alert("First Name is a required field");
		document.getElementById("firstname").focus();
		return;
	}
	if(document.getElementById("lastname").value.length==0){
		alert("Last Name is a required field");
		document.getElementById("lastname").focus();
		return;
	}
	if(document.getElementById("username").value.length==0){
		alert("Username is a required field");
		document.getElementById("username").focus();
		return;
	}
	if(document.getElementById("password").value.length==0){
		alert("Password is a required field");
		document.getElementById("password").focus();
		return;
	}	
}