[TYPO3] How to transfer POST-data through a frameset

[Christian Stuedemann]

Dear list,

I've got a form that sends POST-data to a frameset. One of the
frameset's frame shall use the data to show dynamic content. How can I
transfer the POST-data through the frameset to the frame? The POST-data
may be translated to GET-data in the frame-URL, but how can this be
achived most efficiently/easily?

Details:
Typo3 3.8.1
form: macina_searchbox
frameset typeNum: 10 (e.g.)
frame typeNum: 11 (e.g.)
frame content: indexed_search

Thank's a lot for your helf and have a nice typo-day,
Christian