function validate(){
	var tagInputList = document.getElementsByTagName("input");
	
	var nameTextField = tagInputList[0].value;
	var emailTextField = tagInputList[1].value;
	var zipTextField = tagInputList[2].value;
	
	var formCompleted = true;
	
	if(nameTextField == ""){
		tagInputList[0].setAttribute("class", "textFieldInputOrange");
		formCompleted = false;
	}
	if(emailTextField == "" || checkEmailAddress(emailTextField) == false){
		tagInputList[1].setAttribute("class", "textFieldInputOrange");
		formCompleted = false;
	}
	if(zipTextField == ""){
		tagInputList[2].setAttribute("class", "textFieldInputOrange");
		formCompleted = false;
	}
	
	return formCompleted;
 }

function checkEmailAddress(emailTextField){
	var positionOfAtSymbol = emailTextField.indexOf("@");
	var splitStrings = emailTextField.split("@");
	if(splitStrings.length != 2)
		return false;
			
	var positionOfDot = splitStrings[1].indexOf(".");
			
	if(positionOfDot == -1)
		return false;
	else
		return true;
}

function setBackgroundName() {
	var tagInputList = document.getElementsByTagName("input");
	tagInputList[0].setAttribute("class", "textFieldInput");
}

function setBackgroundEmail() {
	var tagInputList = document.getElementsByTagName("input");
	tagInputList[1].setAttribute("class", "textFieldInput");
}

function setBackgroundZip() {
	var tagInputList = document.getElementsByTagName("input");
	tagInputList[2].setAttribute("class", "textFieldInput");
}