website update - version 5.0 of navigation log spreadsheet

Hi,

In one of my rather infrequent updates to my website, I've added version
5.0 of my Navigation Log spreadsheet. It now has an aircraft details
section to store weight and balance information for multiple aircraft,
which you can then chose in the weight and balance section. I've also
added a double interpolator to help with performance computations from
the POH.

I've also updated my Humor section.

Please take a look at these changes. Any suggestions on how to improve
my website are highly welcome, including but not restricted to the
following:

1) Content
2) Layout
3) Navigation

The URL is http://www.geocities.com/sridhar007/flying.html

Cheers,
Sridhar