I use this code snipet to send a query request to the monster.com search engine and get the responce. Perhaps you can compare and get your answer from that. Their form is almost all pull down menus

$request = GET
           'http://jobsearch.monster.com/jobsearch.asp',
       [
         ah=>'http://jobsearch.monster.com/',
         pg=>'1',
         cq=>$query,
         col=>'dltci',
         mx=>'1000',
         pp=>'500',
         lid=> '354',
         cy=>'US',
         st=>'CA',
         brd=>'1'
         
        ];

  $response = $ua->request($request);

  $r = $response->as_string;
[download]

hope this helps

webadept.net