// JavaScript Document
function formValidator(){
	// Make quick references to our fields
	var companyName = document.getElementById('companyName');
	var address = document.getElementById('address');
	var city = document.getElementById('city');
	var state = document.getElementById('state');
	var zip = document.getElementById('zip');
	var contactName = document.getElementById('contactName');
	var email = document.getElementById('email');
	var phone = document.getElementById('phone');
	var counties = document.getElementById('counties');

	
	// Check each input in the order that it appears in the form!
	if(isEmpty(companyName, "Please enter Company Name.")){
		if(isEmpty(address, "Please enter Company Address.")){
			if(isEmpty(city, "Please enter Company City.")){
				if(madeSelection(state, "Please Choose a State")){
					if(isEmpty(zip, "Please enter Company ZIP.")){
						if(isEmpty(contactName, "Please enter Contact Name.")){
							if(emailValidator(email, "Please enter a valid Company Email.")){
								if(isEmpty(phone, "Please enter Phone Number.")){
									if(isEmpty(counties, "Please enter Counties.")){
										return true;
									}
								}
							}
						}
					}
				}
			}
		}
	}

	return false;

}

function isEmpty(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 One"){
		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;
	}
}