changepage is changing relative path

changepage is changing relative path

Hi, 
I've updated to jquerymobile 1.2 (from 1.7.1) and I have an issue with pagechange...

for example:

my site is in

all page(data-role=page) are contents in index.php, but when i call a page that is located in other php file:
$.mobile.changePage("Path/to/other/file/otherPage.phtml");

and i come back to some page (data-rol=page) in index.php.
then I do an ajax call
$.ajax({
        url: 'index.php',
        type: "POST",........


it does the call in following path:
and of course i get
(firebug's message)

It seems my relative path (htdocs) is changed to "Path/to/other/file" after to doing a changepage(file.php).
I dont know if i have a configuration problem  or it is other thing.

thanks in advance