form action to clean url from select

This is probably stupidly simple, but I'm having trouble with it.

I'd like to use a select list in a form to go to a url:

<form method="get" action="dir/view/">
<select name="id">
    <option value="12">Component name here</option>
</select>
<input type="submit" value="Go" />
</form>

I'd like the form to go to dir/view/12, etc., not dir/view/?id=12. What's the best way to accomplish this?

Thanks!