html transfer information from one page to the next

html transfer information from one page to the next

So I have been looking into this for a few weeks and have come up with
nothing!
I work on the website for my families music store, and have been asked to
add a "Links" page to the website. My goal would be to have the categories
of our vendors (i.e. Violin, Guitar, Piano, etc.) on the left of the page
and when the category is selected the links come up on the right. That
part I have. The tricky part here is: When a link to a vendor (i.e.
Fender, G&L, Yahmaha) is clicked instead of taking them directly to the
site, I want it to take them all to the same page, but embeded on that
page is the site.
I have done a lot of research on this and have come up with nothing. I
could just go through and make a new page for each of the vendors, with
the embedding on each individual page, but that is extremely time
consuming with the amount of vendors.
Is something like this at all possible? I've been playing with embedding
itself and have that down. It just comes down to, which link did they
click, and loading that specific page.
If there is any more information you may need to help or point me in the
right direction please let me know! Same with any code that may be
helpful!
I've come up dead on all my research on this.
EDIT: I guess my ultimate goal is that it will look something like this:
http://answers.yahoo.com/ so that the vendors website is open on bottom,
but our stores banner and links are still at the top. Out website can be
found here: http://www.brassbellmusic.com/default.aspx