$(document).ready(function(){
	//global vars
	var form = $("#customForm");
	var name = $("#name");
	var nameInfo = $("#nameInfo");
	var email = $("#email");
	var emailInfo = $("#emailInfo");
	var phone = $("#phone");
	var phoneInfo = $("#phoneInfo");
	var message = $("#message");
	
	//On blur
	name.blur(validateName);
	email.blur(validateEmail);
	message.blur(validateMessage);

	//On key press
	message.keyup(validateMessage);
	name.keyup(validateName);
	email.keyup(validateEmail);


	//On Submitting
	form.submit(function(){
		if(validateName() & validateEmail() & validatePhone() & validateMessage())
			return true
		else
			return false;
	});
	
	//validation functions
	function validateEmail(){
		//testing regular expression
		var a = $("#email").val();
		var filter = /^[a-zA-Z0-9]+[a-zA-Z0-9_.-]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$/;
		//if it's valid email
		if(filter.test(a)){
			email.removeClass("error");
			emailInfo.text("Thanks");
			emailInfo.removeClass("error");
			return true;
		}
		//if it's NOT valid
		else{
			email.addClass("error");
			emailInfo.text("Only a valid email address will be accepted.");
			emailInfo.addClass("error");
			return false;
		}
	}
	function validateName(){
		//if it's NOT valid
		if(name.val().length < 4){
			name.addClass("error");
			nameInfo.text("Name must be more then 3 characters");
			nameInfo.addClass("error");
			return false;
		}
		//if it's valid
		else{
			name.removeClass("error");
			nameInfo.text("Thanks.!");
			nameInfo.removeClass("error");
			return true;
		}
	}

	function validatePhone(){
         if(phone.val()==""){
			return true;
           }
         else{
		//testing regular expression
		var p = $("#phone").val();
		var filter = /^0[0-9]{9,10}$/;
		//if it's valid email
		if(filter.test(p)){
			phone.removeClass("error");
			phoneInfo.text("Thanks");
			phoneInfo.removeClass("error");
			return true;
		}
       
		//if it's NOT valid
		else{
			phone.addClass("error");
			phoneInfo.text("Valid Mobile or Landlines are 10 or 11 digits and start with a 0.");
			phoneInfo.addClass("error");
			return false;
		}
      }
	}

	function validateMessage(){
		//it's NOT valid
		if(message.val().length < 10){
			message.addClass("error");
			return false;
		}
         
		//it's valid
		else{			
			message.removeClass("error");
			return true;
		}
	}
});