Probleme with Height 100%

2 methods to fix it....

Method 1

thats happening for 2 reasons

1. cox the source file (sample05.html) is overwriting the height given in fckeditor.js

find the line bellow in sample.html and either delete or simply comment the line
oFCKeditor.Height = 300;

2. according to my testing

this.Height = height || '100%'; ==> doesn't work in this case, but changing it as follows will give you "100%" height

this.Height = innerHeight || '100%';

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Method 2

simply replace the following line (in sample05.html)

oFCKeditor.Height = 300;

with

oFCKeditor.Height = window.innerHeight;


BUT, after doing this you'll see that the editor will stretch beyond the window's viewable area. thats is cox, of the toolbars and frames (if any) in that page).