$(document).ready(function(){
	//global vars
	var form = $("#customForm");
	var name = $("#name");
	var nameInfo = $("#nameInfo");
	var surname = $("#surname");
	var surnameInfo = $("#surnameInfo");
	var email = $("#email");
	var emailInfo = $("#emailInfo");
	var privacy = $("#privacy");
	var privacyInfo = $("#privacyInfo");
	
	//On blur
	name.blur(validateName);
	surname.blur(validateSurname);
	email.blur(validateEmail);
	privacy.blur(validatePrivacy);
	//On key press
	name.keyup(validateName);
	surname.keyup(validateSurname);
	email.keyup(validateEmail);
	privacy.keyup(validatePrivacy);
	
	//On Submitting
	form.submit(function(){
		if(!validateName() && !validateSurname() && validateEmail() && validatePrivacy()) {
			return true
		}
		return false;
	});
	
	//validation functions
	function validateEmail(){
		//testing regular expression
		var a = $("#email").val();
		//var filter = /^[a-zA-Z0-9]+[a-zA-Z0-9_.-]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$/;
		var filter = /^[a-zA-Z0-9]+[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/;
		//if it's valid email
		if(filter.test(a)){
			email.removeClass("error");
			emailInfo.text("");
			emailInfo.removeClass("error");
			return true;
		}
		//if it's NOT valid
		else{
			email.addClass("error");
			emailInfo.text("Campo obbligatorio: inserire un indirizzo mail valido");
			emailInfo.addClass("error");
			return false;
		}
	}
	function validateName(){
		//if it's NOT valid
		var c = $("#name").val();
		var filter = /^[a-z'\s]+$/i;
		if((filter.test(c))){
			name.removeClass("error");
			nameInfo.text("");
			nameInfo.removeClass("error");
			return false;
			
		}
		//if it's valid
		else{
			name.addClass("error");
			nameInfo.text("Campo obbligatorio: inserire solo caratteri");
			nameInfo.addClass("error");
			return true;
		}
	}
	function validateSurname(){
		var d = $("#surname").val();
		var filter = /^[a-z'\s]+$/i;
		if((filter.test(d))){
			surname.removeClass("error");
			surnameInfo.text("");
			surnameInfo.removeClass("error");
			return false;
		}
		//if it's NO valid
		else{
			surname.addClass("error");
			surnameInfo.text("Campo obbligatorio: inserire solo caratteri");
			surnameInfo.addClass("error");
			return true;
		}
	}
		
	function validatePrivacy(){
		 var checked = $("input[@id=privacy]:checked").length; 
	     if (checked == 0) {
	    	privacy.addClass("error");
			privacyInfo.text("Campo obbligatorio");
			privacyInfo.addClass("error");
			return false;
	    			}
		//if it's valid
		else{
			privacy.removeClass("error");
			privacyInfo.text("");
			privacyInfo.removeClass("error");
			return true;
		}
	}
	
	
	
	
});