function formValidator(){
	var name = document.getElementById('name');
	var email = document.getElementById('email');
	
	if(notEmpty(name,"Please enter your name")){
		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 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;
	}
}