YU Alias plugin - sets alias in any Joomla extension by converting so-called "ex-yu" both latin and cyrillic accented characters into their unaccented ASCII equivalents:
š,đ,č,ć,ž,dž,ш,ђ,ч,ћ,ж -> s,dj,c,c,z,dz,s,dj,c,c,z

Same goes for upper case characters and all is converted to lowercase at the end.

RESULT:
Urls such as
http://www.mywebsite.com/шта-ће-учинити-људи-кад-су-жедни

is transformed into more readable form
http://www.mywebsite.com/sta-ce-uciniti-ljudi-kad-su-zedni

First one is hard to speak about and let someone know actual url since it's something like:
http://www.mywebsite.com/%D1%88%D1%82%D0%B0-%D1%9B%D0%B5-%D1%83%D1%87%D0%B8%...

yu alias plugin

 Download YU Alias system plugin.