how can I call a link? ??

I don't really no how to word this. How can I use a single PHP to update two sides of a framed page? like a call to: add.php?add=4ffqe45&manual=123.33&fn=ex1 I want it to update the left frame with a call to: http://serverview_cart.php?add=4ffqe45 and I want it to update the right frame with a call to: http://server/pdf/ex1.pdf The only page updating/refreshing/goto'ing I know of in PHP is the header ( Location: ) command, but that only does a single page and must be in the header (obviously). What can I do? Ryan Shrout