When i submit this form, the values just disappears from the textboxes. I like them to stay printed in the textboxes. How do i do that?

<form id="myform" method="get" action="" onSubmit="hello();">

       <input id="hour" type="text" name="hour" style="width:30px; text-align:center;" /> :
       <input id="minute" type="text" name="minute" style="width:30px; text-align:center;" />
       <br/>
       <input type="submit" value="Validate!" />
    </form>

    <style type="text/css">
    .error {
        color: red;
        font: 10pt verdana;
        padding-left: 10px
    }
    </style>
<script type="text/javascript">
function hello(){

    var hour = $("#hour").html();
    alert(hour);
}
    $(function() {
        // validate contact form on keyup and submit
        $("#myform").validate({
            //set the rules for the fild names
            rules: {
                hour: {
                    required: true,
                    minlength: 1,
                    maxlength: 2,
                    range:[0,23]
                },
                minute: {
                    required: true,
                    minlength: 1,
                    maxlength: 2,
                    range:[0,60]
                },
            },
            //set messages to appear inline
            messages: {
                hour: "Please enter a valid hour",
                minute: "Please enter a valid minute"
            }
        });


    });
    </script>