function formValidator(){
	// Make quick references to our fields
	var firstname = document.getElementById('firstName');
	var lastname = document.getElementById('lastName');
	var street = document.getElementById('workStreet');
	var city = document.getElementById('workCity');
	var state = document.getElementById('workState');
	var zip = document.getElementById('workZip');
	var email = document.getElementById('email');
	var workPhone = document.getElementById('workPhone');
	
	// Check each input in the order that it appears in the form!
	if(isAlphabet(firstname, "Please enter your First name")){
	 if(isAlphabet(lastname, "Please enter your Last name")){
	  if(notEmpty(street, "Please enter your Street address")){
	   if(notEmpty(city, "Please enter your City")){
	    if(notEmpty(state, "Please enter your State")){
		 if(isNumeric(zip, "Please enter a valid zip code")){
		  if(notEmpty(workPhone, "Please enter a valid phone number")){
		   if(emailValidator(email, "Please enter a valid email address")){
			return true;
		}}}}}}}}
	
	return false;
	
}

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

function isNumeric(elem, helperMsg){
	var numericExpression = /^[0-9]+$/;
	if(elem.value.match(numericExpression)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}

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

function isAlphanumeric(elem, helperMsg){
	var alphaExp = /^[0-9a-zA-Z]+$/;
	if(elem.value.match(alphaExp)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}

function lengthRestriction(elem, min, max){
	var uInput = elem.value;
	if(uInput.length >= min && uInput.length <= max){
		return true;
	}else{
		alert("Please enter between " +min+ " and " +max+ " characters");
		elem.focus();
		return false;
	}
}

function madeSelection(elem, helperMsg){
	if(elem.value == "Please Choose"){
		alert(helperMsg);
		elem.focus();
		return false;
	}else{
		return true;
	}
}

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;
	}
}