[Webdev] JavaScript variable scope

[Tony Clarke]

I'm abit baffled by the scoping rules in Javascript. Imagine the following scenario

Left Frame(left.html)                                            Right
Frame(right.html)

<script src=blah.js>                                               Form goes here
(containts myclass definition,
function foo,
and global data)


Now the function foo references the global data(browserversion and other misc
stuff), which i can access fine from
from Right.html by going parent.frames["left"].browserversion. But if i go
parent.frames["left"].foo() from right.html
I get undefined references to browserversion.  However if I go foo() from left.html
it sees browserversion! Say all foo() does
is alert(browserversion)...Is this normal javascript behaviour or have I mucked up.

Any ideas?

Tony.