Functions don't execute inside quotes. You might want to try something like:

print uri_unescape($page);
[download]

Then it will probably still not work, because if you were to add "use warnings" to the top of your script you would get a warning such as:

Undefined subroutine &main::uri_unescape called at ...

Which in turn could be corrected by adding:

use URI::Escape;
[download]

to the top of the script as well.

-enlil