How can a GET form be submitted with variables in a specific order?

I am building a form that will be submitted to a different website (which I have no control over or ability to change). Oddly enough, the other site seems to require the queries be in a specific order to work correctly. Is there a way to specify how the submitted GET query will be ordered? I've tried ordering the fields in the for开发者_运维问答m, but it doesn't seem to work consistently.

As an example, 1. works fine, while .2 throws an error.

1. http://minerva.maine.edu/search/?searchtype=t&searcharg=caterpillar
2. http://minerva.maine.edu/search/?searcharg=caterpillar&searchtype=t

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Not that I am aware of, however, ugly a solution as it is you could just build your URL in javascript and use window.location to send your GET?