Passing text from rich text editor as iframe

[eluser]tirithen[/eluser]
I'm trying to implement an rich text editor written in javascript to the admin part of my webpage, basicly the rte is an form with text editing buttons and a submit button. The easyest way of getting it into my admin page is by using an iframe but then the problem is, how do I pass the text to the form on the main page that would mabye check some thingd and then submit the text into a database. I guess it's about post or get method but I can't find the info on how to implement it.

Someone that knows of a better/simpler way of doing this?