Yes, iam developing a server application with php.  The users access an php file that has javascript with
ajax(jquer).  I know i cant stop someone from grabbing the javascript and changing it.  But can i and how do
i assure that when a ajax req comes to my php application it was generated by the javascript in my file and not some modified version of it.   Dont need to stop it just need to beable to recognize in php that the ajax request
was modified.   If cross domain requests were not allowed i guess this would not be possible.  But its my
understanding that you can change firefox or IE to allow cross domain requests.  Which means to me
they could take my javascript modifiy it and send ajax(jquerY) request to me and may not know its from
a modified javascrip

                           Thanks,DAVID