> E.g. <img src="http://<some
> domain>/boomerang/
category=superads;subcategory=banner;customer=<custid>/<some
> url>"/> And <a href="http://<some
> domain>/boomerang/
category=superads;subcategory=linkclick;customer=<custid>/<some
> url>">..</a>
> 
> If I'm not mistaken this will lead to the same as using a
> javascript/ajax solution, but with less code.

This will work, and is the simpler solution.
But because boomerang urls can not be cached it means there must always 
be the redirect before showing the cached image.
(Although we were doing something similar for a long time without any 
large overhead).

Using a separate, but parallel, javascript call the image can be 
displayed immediately.

Steinar, it's up to you. I doubt the performance penalty with magne's 
solution would be anything you could notice, especially when considering 
that most banner images would not be already cached in the browser. But 
to be sure you'd have to test with firebug or the like.

~mck


-- 
"A mind that has been stretched will never return to it's original
dimension." Albert Einstein
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