If you were using a standard engine like CGI, that POST would/should work fine. Sounds from the SO thread like you’re processing params yourself. A somewhat serious mistake, I argue. That said, .serialize() in jquery will probably construct the GET query string you want. Something like (untested!)–

$.ajax({
  url: "/myweb/myScript.pl?" + $("#yourForm").serialize()
});
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An SSCCE will always get you better answers on every forum.