How can I post values from a multiple select in a form? When I hit submit none of the selected values are posted.

<form id="form" action="" method="post">
    <div>
        <select id="inscompSelected" multiple="multiple" class="lstSelected">
            <option value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
            <option value="4">4</option>                
        </select>
        <input type="submit" value="submit">
    </div>
</form>
html html-select
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