extending JQuery plugin

I need to extend the very simple JQuery plugin which I wrote before few years, at the moment have no time to extend it. This plugin is used at [login to view URL] named `[login to view URL]` the concept is simple that on `keydown` I intercept the key code and match with a map of urdu keys. If I find a key in the map I write that key instead of `pressed key`. But this is simply a textarea. There is also a very very simple and good javascrpt WYSIWYG editor function i.e. [login to view URL] It's also almost 150 line of code. I want to integrate/join these 2 functionalities. i.e a `rtl` editor and pell editor functions. PS:: if you can make a A4 page like layout that will be great. Please also check that one can use it on Andriod also