perserving %varibles% values in a cgi request

[Dave Potts]

If I make a request to mapserv by saying something like

cgi-bin/mapserve?imgxy=300.0+150.0&site=foobar

I may refer to the value %site% in my foo.map.

Is there any way of preserving this value in the matching web page ? 
otherwise if I do a redraw request I loose the value of %site% varible.

I don't loose the imgxy, because of the [imgxy] support from map server.

Dave.
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