The way it works is that Sellerdeck uploads all the default scripts as part of a file called sellerdeck.min.js.
However, if you make a manual change to any of the js files in Sellerdeck, the software will upload those modified files rather than the minified file. Fortunately, there is a (somewhat technical) way to do re-minify the files yourself. It requires installing a smal piece of software called 'Uglify'.
To install Uglify:
1. Install node.js using the windows installer at http://nodejs.org/download/ (suggested version is v0.10.30). This should set up paths so that nodejs can be run from the command line. If that doesn't happen you may need to reboot.
2. Open a cmd prompt and enter
npm install uglify-js -g
and press return. If this doesn't run you may have to change to the folder C:\Program Files (x86)\nodejs and run it directly from there.
Please note that this is pretty advanced stuff direct from the developers, so our support team will not be able to assist you with this.