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Theory behind password managers in IE?

I've been wanting to create a password manager for some time now and
decided I'd give it a go. However, before I start I'm interested in
understanding how current password managers do their mojo.

Particularly, how automatically filling in values and submitting the
page.

I have two theories currently on the table. One, somehow the HTML is
intercepted and the appropriate values entered and then given to the
browser to display. Two, essentially keystrokes are mimicked.

Does anyone have ideas on how this is accomplished? If I were to
create a password manager, it would be IE specific. Most likely
implemented in a band object.

On a side note, if using a band object, how would one go about
accessing the HTML source of the current webpage? And is there a way
for the band object to retrieve the source and modify it before IE
does the rendering?

If there any other ideas or cool things password managers do behind
the scenes, I'd love to hear about them.

Thanks.
Nov 15 '05 #1
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