How to "overlay" your functionality on another site?

[Monty]

I know this isn't necessarily an ASP.Net question, but it is web programming
and I intend to try it using ASP.Net, I just need to get pointed in the
right direction. I've seen some sites that allow you to browse other sites
"through" their site with some of their functionality overlaying (or
embedded in) the site you are browsing. For instance, promocode.com will
allow you to view other sites (like Amazon) with their "promocode"
functionality showing in the upper left. If you click on a link in the
target page, it takes you to that amazon page still wrapped in the promocode
functionality. I've seen other similar sites that "munge" the links in the
target page so that they point they all get redirected to the functionality
provider (like http://htmlblock.co.uk/anonymous_web_browser), but the
promocode site doesn't ~seem~ to be doing that. What is this called and how
do I get started? Thanks.

[=?Utf-8?B?UGV0ZXIgQnJvbWJlcmcgW0MjIE1WUF0=?=]

If they aren't "munging" as you describe for a proxy site, then most likely
they are redisplaying the content inside an IFRAME control.

-- Peter
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"Monty" wrote:

I know this isn't necessarily an ASP.Net question, but it is web programming
and I intend to try it using ASP.Net, I just need to get pointed in the
right direction. I've seen some sites that allow you to browse other sites
"through" their site with some of their functionality overlaying (or
embedded in) the site you are browsing. For instance, promocode.com will
allow you to view other sites (like Amazon) with their "promocode"
functionality showing in the upper left. If you click on a link in the
target page, it takes you to that amazon page still wrapped in the promocode
functionality. I've seen other similar sites that "munge" the links in the
target page so that they point they all get redirected to the functionality
provider (like http://htmlblock.co.uk/anonymous_web_browser), but the
promocode site doesn't ~seem~ to be doing that. What is this called and how
do I get started? Thanks.