I am using the following drop down box to pull out values from a database:-

PHP Code:
include ("conn.php");
$catsql "SELECT * FROM threads";
$result mysql_query($catsql);
            while (
$options.="<option value=\"$cat_id\">".$cat_name;
            <select name="thing">
            <option value="0">Choose
I dont want to have a button to click to take users to a page. I want the user to select an option and the be taken to the specific page.

However what i want is to send the user to page like this:-

posts.php?thread_id=19&thread_name=Heaton Park Goals Development
This information will come from teh drop down box, but i dont know how to do this?