Untitled

<html>
<head>
<h1> Rife & Shak Brothers United Corporations<h1>
<script type="text/javascript" src="loginvalidation.js" ></script>
 </head>

<body>

<form name="login" onsubmit=" return validateLogin(this)" action="checkLogin.php" method="post">

<p>
Username: <input type="text" name="username" />

</p>

<p>
Password: <input type="password" name="password" />
</p>

<input type="submit" value="Login" />

</form>


</body>


</html>


var username;
var password;

function validateLogin(form){


	validateUsername(form.username);
	validatePassword(form.password);

	if(username=true&&password=true)
	return true;

}

function validateUsername(field){
	var illegal = /[\!\`\~\@\#\$\%\^\&\*\=\(\)\<\>\,\.\?\{\}\'\;\:\\\"\[\]]/ ;

	if(field.value.length==0){
	alert("Please fill in Username.");
	username = false;
}
	else if(field.value.length<3 || field.value.length>12){
	alert("Username must be between 3 to 12 characters");
	username = false;
}
	else if(illegal.test(field.value)){
	alert("Username must only be regular expressions");
	username = false;
}
	else
	username = true;

}

function validatePassword(field){
	if(field.value.length==0){
	alert("Please fill in Password.");
	password = false;
}
else
password = true;

	}