I am new to your forum and I must say it looks GREAT!

I have a bit of a problem. I use a vendor for my business that I am pulling data off of their web-site and putting on mine using IFRAMES. Some (A LOT) of their pages have POST submit buttons on them (which of course take you to the next page(s)). These pages are on their order detail pages. I notice that when I click on one of these POST submit buttons, my site is left (along with the IFRAME) and I just enter my vendors site (outside of the IFRAME and my site).

QUESTION: Is it possible to add coding that will keep me inside of my site and continue to show my vendors site as well inside of a IFRAME when the POST submit buttons on my vendors site is pressed?

I DO NOT have access to the coding on my vendors site, just mine.