Adding support for Olark to be localized into a right-to-left (RTL) language, such as Hebrew, is as simple as changing a setting on your account. Under the Chatbox Position section of your account, choose "Right To Left Alignment".

right to left chatbox setting

Alternatively, if you need to make the change on a per page basis, for example if you have both English and Hebrew on your site, you can paste the following code onto RTL pages beneath your existing Olark code:

olark.configure("system.right_to_left", true);