[monolithed]

<script src="http://code.jquery.com/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
    $('form').submit(function(){
        if($('input[type="text"]').val().length >=25){
            return true;
        }
        return false;
    });
});
</script>

<form action="" method="post">
    <input type="text" />
    <input type="submit" />
</form>