Update Jquery.Plugin.UyghurInput.js

early version works fine chrome, IE but not in firefox, after changing the code the code compatible with both in ie dom , firefox dom based browser.

Ps; I am owner of Tildil.com, for input uyghur i use your jquery, and i have thanks to you and mr. muhemmed brother.  I hope you test and merge it with my change. Another problem is for internet user, we don't have to download jquery file, just use link <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script> like that, hope you add this to your readme file. thanks a lot, you save me a lot time, rexmet..