Sending query to 2 frames

Greetings,

I have a page with three frames. One frame can contain either an image map (in an html file) or a form with some check boxes (in a different php file). When the user clicks on a section of the image map or fills in some check boxes on the form and presses the Submit button, the parameters are passed to a php file running in a second frame that formats a query against a MySQL table and populates a drop-down list. The details from the first member of the drop-down list need to be sent to the third window automatically (without having to press the Submit button associated with the drop-down list). Then, if the user chooses a different member of the list, the contents of the third window should change again. That part is simple, but I can't get the initial query to push results to two frames. Has anybody got a solution to this problem?

Thanks!

You'll have to devise some sort of js to handle this. When the one frame gets the update, it sends the query as a parameter to a function in the other frame, or it sends the query as a get parameter to a reload of the other frame, if the function call isn't possible.