Object call in Frames (Beginnerquestion)

[Patrick Marti]

In a frame of my Web-Project, I add some picturebutons in the contents part.
When I now click to a buton, in the mainside of this frame it should then
show the
same picture as a big one.
My question:
I have 2 classes, the MYCONTENT and the MYMAIN.
From the MYCONTENT i will call a function ShowPicture(X) in the MYMAIN.
But what is the Name of the Object of the MYMAIN class who get created
by starting and where get it created. I mean, i have no code written in my
project to create the Object and anyway I have obviously one, when I start my
project.

Thanks a lot for an answer
Greetings
P. Marti