I have a form issue. I hope that the JavaScript forum is the appropriate place for the question.

The form has a select field that results in the user being forwarded to a URL. Here's the code:
Code:
<form action="http://somedomain.com?id1=test&amp;">
<select name="type" onchange="this.form.submit()">
<option value="FirstChoice">Choice 1</option>
<option value="SecondChoice">Choice 2</option>
<option value="ThirdChoice">Choice 3</option>
</select></form>
I'm expecting the result to look like this:
http://somedomain.com?id1=test&type=FirstChoice

However the result is this:
http://somedomain.com?type=FirstChoice

Does anyone know how I can get the desired result? Thanks.

Steve