Use the <HOME> and <END> keys please?

Dear Apple and Mac OS X application developers,

Please, please, please, please, pretty please!! When you write an application for Mac OS X, make the <HOME> and <END> keys do their job! Firefox devs especially! I'm tired of writing up a post or something similar, wanting to go back to the beginning of the line, pressing <Apple>+<LEFT>, and going back a page in my browser, effectively throwing away my post!

Is it really that hard? After all, *some* applications get it right!

Kind regards,

Raoul.

P.S. For those who don't know, I recently moved to Mac OS X at work.