In 1.8.3rc1 frontend have many problems in Ukrainian and French languages of web-interfece
The reason I think that in these two languages are very often used an escaped apostrophe in strings translation \'
Probably some of the lines causing the problem.
Result:

• top menu not clicked by mouse
• cancel button not work in all places
• and other....

I determined that this problem has started still from branches/dev/dev-465 revision 13330

Additionally: with English locale open in IE8 items.php and you see some error on page is present - icon in window status. And after try to open or create Item - is impossible.

Tested on two different zabbix installation, from two different workstation in several browsers.