valid.js

var email= document.forms['form']['email'];
var password= document.forms['form']['password'];

var email_error = document.getElementById('email_error');
var pass_error = document.getElementById('pass_error');

email.addEventListner('textInput',email_Verify);
password.addEventListner('textInput',pass_Verify);

function validated(){
	if(email.value.length < 9){
		email.style.border="1px solid red";
		email_error.style.display="block";
		email.focus();
		return false;
	}
	if(password.value.length < 6){
		password.style.border="1px solid red";
		pass_error.style.display="block";
		password.focus();
		return false;
	}
}

function  email_Verify(){
	if(email.value.length >=8){
		email.style.border="1px solid silver";
		email_error.style.display="none";
		return true;
	}
}
function  pass_Verify(){
	if(password.value.length >=5){
		password.style.border="1px solid silver";
		pass_error.style.display="none";
		return true;
	}
}