I have created a page that uses a server side AJAX request to include a php page to display some text in Turkish.

The included page is: http://tr.musikdebu.com/get_tr_text.php
It displays the Turkish text with the additional charcters found in the Turkish language (ç ö ü etc) when typed into the address bar of the browser. The lead me to believe the problem is not PHP.

the including page is: http://tr.musikdebu.com/test.htm

For this example this page has two sections. 1) a navigation menu displays text in Turkish by including a html file: http://tr.musikdebu.com/top_nav_menu.htm
This text displays fine use AJAX HttpRequest. This lead me to believe the problem is with PHP.

2) a body section that inlcudes the the php via AJAX HttpRequest.
This section doesn't display the Turkish characters correctly. Some of the charaters appear as question marks (?).

So no I'm perlexed. Can anyone point me in the right direction to resolve this issue?