Slow Javascript on Mac when calling function in parent window

[Kevin Schroeder]

Hello,
I'm having a little trouble with Mac IE & Safari on a client's computer.
I have a window (window 2) that is opened from another window (window 1)
that has 3 frames in it (window 2). When window 2 opens it calls a function
in window 1 that populates a form field in window 1. This works fine on
Windows IE & Netscape and Linux Netscape but runs VERY slow on Mac OSX.

Timeline:
Step 1: Window 1 -> Opens window 2
Step 2: Window 2 -> renders with some code that calls a function in window 1
to populate a form field.
Step 3: Window 2 -> calls a function via onLoad() in the body tag that
starts a loop
Step 4: Window 2 -> call parent window function to populate form field.
Step 5: Window 1 -> populates the form field
Step 6: Window 2 -> repeat steps 4 & 5 until form is populated
Step 7: Window 2 -> closes

Would anyone know the cause of this and a possible solution for Mac IO &
Safari?

Thanks
Kevin Schroeder