Where can I get that piece?

Hi!

My iPhone fell down on one of the lower edge, close to the Home button.

Here are the problems:

the home button stopped to work (I had to turn off and on again to go back),

when I turned it off it stared again automaticaly,

nothing happens when I plug the phone in (neither to a mac or to the socket)....

I disassembled it and I found what's broken..It's a tiny orange cable connecting the dock and the home button.

My problem is now that I don't know where to get that piece from...(it's not sold here)

Thanks for an answer!