lucy24 - 4:59 am on Jan 4, 2012 (gmt 0)
Your browser's View Source function is using a different line-break format than your editor, so the breaks aren't recognized. For an exact explanation we would need to know what OS you're on, what editor, what form of line ending it uses, what ftp program you use to upload and what its settings are ... and possibly a few other things.
Or did you mean that when you upload a file and later download the same file, the carriage returns are gone with the wind?
Raise your hand if you saw the topic title and thought the answer would involve relative links and CSS :)