why not this way

//form file
<form id='form'>
    <input type='text' name='example' value='test'/>
    <input type='submit' value='go' name='submit'/>
</form>
<di id='request'></div>
<script src='jquery.js'></script>
<script>
    $("#form").addEventListener(
        "submit",
        function(e){
            $("#request").load("treatment.php");
        },
        false
    );
</script>