// JavaScript Document

function formValidator(){
	// Make quick references to our fields
	var firstname = document.getElementById('firstname');
	var lastname = document.getElementById('lastname');
	var email = document.getElementById('email');
	var email2 = document.getElementById('email2');
	var share = document.getElementById('share');
	
	// Check each input in the order that it appears in the form!
	if(isAlphabet(firstname, "Please enter a valid First Name (letters only)")){
		if(isAlphabet(lastname, "Please enter a valid Last Name (letters only)")){
				if(emailValidator(email, "Please enter a valid Email Address")){
					if(emailValidator(email2, "Please enter a valid Email Address")){
						if (notEmpty(share, 'The share field cannot be empty')){
								if (empty(country, "If you are a Real Person, then try again")){
									if (emailEqual(email, email2, "Email Not Equal -  Please Reenter")){
											return true;
									}
								}	
						}
					}
				}
		}
	}	
	return false;
	
} // end form validator

function notEmpty(elem, helperMsg){
	if(elem.value.length == 0){
		alert(helperMsg);
		elem.focus(); // set the focus to this input
		return false;
	}
	return true;
}

function empty(elem, helperMsg){
	if(elem.value.length >  0){
		alert(helperMsg);
		elem.focus(); // set the focus to this input
		return false;
	}
	return true;
}

function isAlphabet(elem, helperMsg){
	var alphaExp = /^[a-zA-Z]+$/;
	if(elem.value.match(alphaExp)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}



function emailValidator(elem, helperMsg){
	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	if(elem.value.match(emailExp)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}

function emailEqual(elem, elem2, helperMsg){
	if(elem != elem2){
		alert(helperMsg);
		elem.focus(); // set the focus to this input
		return false;
	}
	return true;
}