The first step is to find the files. If you are using Unix, the files are stored in
/usr/local/data/www/projects/webmail/Windows users would most conveniently use samba to map a new drive to
\\samba\wwwand then navigate to the \projects\webmail\ directory on that drive. The files in this directory are text files, so be sure to use a text editor such as Notepad or KEDIT to edit them.
cp message-test.js message.jsOn Windows, you can use drag and drop and the Windows Explorer. However, there is a complication. You can't rename a file and replace another file in one step. However, you can copy message-test.js to your local hard drive, rename it to message.js, and the copy it back to /projects/webmail/ and allow it to overwrite the existing message.js.
(You could simply erase message.js and then rename message-test.js to message.js. However, for the few seconds between, no message.js would exist, and anyone loading the WebMail login page would receive an error.)