My website host Lonex blames this on Firefox - the problem does not occur using Explorer: When editing a file using Tiny Mice on Lonex, the whole file can be seen and edited. When editing the file using Lonex's plain text editor, the 10 to 20 bottom lines of a large file do not show on the editing screen. They can be copied using Shift-Down and Ctrl-c, during which the missing lines flash on and off within the selection highlighting, but scrolling down to them doesn't work - the bottom of the screen just jerks down and then back up to the last visible line. This continues even if I delete the hidden lines as well as several lines above them - the problem just shifts to the end of the last line and won't allow anything to be added after that point.