Idea: index of current directory downward

Idea: You know that sinking feeling when you reach down and click
[Index] in AddCacheInfo and you hear that disc grinding sound telling
you that you bit off more than you can chew as your browser fills up
and up and up?

Examining what you clicked,
http://localhost:8080/index/url?http://www.geocities.com/rf-man/cb/ec6670.html
you see that goodness, it was the extra large "geocities" multi site site.

Good thing here I am, Dan Jacobson, to introduce a new concept, the
"Index from here down" or "Tree".  Let's look at the present
AddCacheInfo line:

[Delete|Refresh:Options|Monitor|Index|Configure|Info] - WWWOFFLE

And now after implementing my brilliant idea:

[Delete|Refresh:Options|Monitor|Index|Tree|Configure|Info]

Note how I have disposed of the ubiquitous "WWWOFFLE", making room for
"Tree", or whatever you want to call it.

So, clicking
http://localhost:8080/tree/url?http://www.geocities.com/rf-man/cb/ec6670.html
instead of getting the whole www.geocities.com index, would only get
the index for the level we were on and downwards:
http://www.geocities.com/rf-man/cb

What? you say hard to implement? Hurmf.
$ wwwoffle-ls http://www.geocities.com/|
perl -nwe 'print if m{http://www.geocities.com/rf-man/cb}'

Indeed on any of these new "tree" indexes there could buttons "1 2 3
... levels up" to adjust our level (up only, of course) at anytime.

All that is left is for Andrew to kindly implement it.