posting variables

[Anon]

I can see that my problem is not so unique, and I apologise if people are tired of this one type of question, but after reading many posting, I still can't get the following to work. Any help would be great.
I have a page with 3 frames in it. The first one, two values are entered (start date and end date). when the submit button is pressed, the two date values are passed to the second frame, and a query is run based on the dates, and data is populated into a pulldown box. Then a selection is made from the pulldown box and passed to the 3 frame. (here is the problem) In the third frame I can only see the value from the second frame and NOT the first.
I have the <?php_track_vars?> on, and I have tried to figure out the correct syntax for the http_post/get_vars command.
CAN ANY ONE HELP ....Thanks

[Anon]

You may want to try and create hidden inputs with the values of the first frame within the second frame so they get passed withe new data. ie

if the first frame had two values passed from it $date1 and $date2

In the second frame where you create the dropdown, in that same form make two hidden inputs something like

printf('<input type="hidden" name="date1" value="%s"', $date1);
and
printf('<input type="hidden" name="date2" value="%s"', $date2);

Now when yuou submit the form in the second frame these two variables will get passed as well.

[Anon]

That sounds great. I will try it latter....Thanks