function formValidator(){
	// Make quick references to our fields
	var name = document.getElementById('name');
	var company = document.getElementById('company');
	var phone = document.getElementById('phone');
	var comments = document.getElementById('comments');
	var rcsa = document.getElementById('rcsa');
	var email = document.getElementById('email');
	
	// Check each input in the order that it appears in the form!
	if(isAlphanumericSpace(name, "Please enter a valid name. No special characters please.")){
		if(isAlphanumericSpace(company, "Please enter a valid company name. No special characters please.")){
			if(isNumeric(phone, "Please enter a valid phone number. Numbers only.")){
				if(emailValidator(email, "Please enter a valid email address.")){
					if(isAlphanumeric(rcsa, "Please enter a valid RCSA Member number. No spaces and special characters allowed.")){
						if(isEmpty(comments, "Please enter your feedback here.")){
							return true;	
						}
					}
				}
			}
		}
	}	
	return false;	
}

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

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 isAlphanumericSpace(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;
	}
}