HI (again)

is there some tricks like

<http://www.foo.com/downloads/img[$index(0,999,999)].png>
to get img000.png to img999.png

<http://www.foo.com/downloads/img[$date(20/10/2004,30/11/2004,$dd$mm$yyyy)].png>
to get the files between 20/10/2004 and 30/11/2004

it would be nice on dir with listing denied and when you
know the naming scheme but don't have page/links to the files