YA: Simple Form Required Fields Check

<!-- In Response to a Yahoo Answers Question -->
<html>
    <head>
        <script type="text/javascript" language="Javascript">
            function validateForm(){
                var theForm = document.forms["myForm"];
                var theReqFields = ['bizname','fullname'];
                var formPass = 0;
                for( var x in theReqFields){
                    if(theForm[x].value.length === 0){
                        formPass++;
                    }
                }
                if(formPass === 0){
                    return true;
                }else{
                    alert('Some Required Fields Are Empty. Please Correct before continueing.');
                    return false;
                }
            }
        </script>
    </head>
<body>
    <form name="myForm" onsubmit="return validateForm();">
        Biz Name: <input type="text" name="bizname"><br>
        Full Name: <input type="text" name="fullname"><br>
        Email: <input type="text" name="email"><br>
        <input type="submit" value="Send">
    </form>
</body>
</html>