Add timestamp to all links (circumvent proxy server cacheing)

Hello,
we found some proxy servers cache the jsps, so we've been putting a timestamp on the links so when the user clicks on them it looks like a different request to the proxy server. does anyone know of a good way to do this for all links in a webapp? i tried using filters, but didnt come up with a good way to rewrite the links. encodeURL() only appends the session id, which is the same for a person's session and only if cookies aren't available. i guess we need a way to append the timestamp, requestID or something unique to each request. anyone know of a good or best way to do that? my best candidate now is a jsptag that takes in the url and parameters normally in the href but inserts a timestamp. any better way?

we don't control all the proxies. so we need a
solution that is bigger then any of the customer's
proxy settings.Sorry, that's not what I meant, what I meant was sending HTML headers that tell proxies not to cache the page. Read the link on my previous post to see.

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