How to target frames with Encrypted password script?

[needhelp123]

1) Script Title:
Encrypted Password script
2) Script URL (on DD):
http://www.dynamicdrive.com/dynamicindex9/password.htm
3) Describe problem:
The script itself works, but how do I target it to a specific frame? For example, my website has 3 frames within the frameset. The script is currently running in the 'topFrame', so everytime I login, it automatically opens the webpage inside the 'topFrame'. However, I want it to open the webpage inside the 'mainFrame'. How would I go about modifying it so that it can target frames? I've tried things such as, target="mainFrame", but that hasn't been any help. Any help is appreciated.

[jscheuer1]

Replace:

window.location=password+".htm"}

with:

top.frames['mainFrame'].location.href=password+".htm"}