javascript form submission

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javascript form submission

how can apply validation when doing submission like following

    <html>
    <script type="text/javascript">
    function submitform()
    {
        document.forms["myform"].submit();
    }
    </script>
    <form id="myform" action="submit-form.php">
    Search: <input type='text' name='query'>
    <a href="javascript: submitform()">Submit</a>
    </form>
    </html>

in this validation i have to apply is that text box can't left empty

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April 16, 2012 at 1:37 PM

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