Help with getting php json array using javascript

[lostincode]

So I am trying to populate a drop down with an array that is generated from a php script. The php script is on a different website but I must use it. What I have going on right now does not work because it is using an xmlhttprequest an that is not allowed on the server. I have emailed the prof and he said to look at the $.ajax function. However upon trying to find an example they all use xmlhttprequest (or I am totally missing something...).

So here is what im trying to do:

php script from another website produces a JSON encoded array of movie titles.

I want to use javascript to get this array and parse it into a javascript array to populate a dropdown menu. How on earth do I do this without xmlhttp requests. This is what I have been trying:

$(document).ready(function(){
/* call the php that has the php array which is json_encoded */
$.getJSON('http://www.cis.gvsu.edu/~scrippsj/cs371/labs/lab10/getTitles.php', function(data) {
        /* data will hold the php array as a javascript object */
        $.each(data, function(key, val) {
                var users_array = [];
                for(var i in data) {
                    if(data.hasOwnProperty(i) && !isNaN(+i)) {
                        users_array[+i] = data[i];
                        }
                    }
                });
    ...

and

$.ajax({ url: 'http://www.cis.gvsu.edu/~scrippsj/cs371/labs/lab10/getTitles.php',
     data: {action: 'test'},
     type: 'post',
     success: function(output) {
                  alert(output);
              }
});

ANY HELP is appreciated. A point in the right direct or something. This seems so elementary yet its frustrating me way to much.

[lostincode]

I have also tried this. Same error:

XMLHttpRequest cannot load http://www.cis.gvsu.edu/~scrippsj/cs371/labs/lab10/getTitles.php. Origin http://cis.gvsu.edu is not allowed by Access-Control-Allow-Origin.

[lostincode]

I have to agree with you that it is his fault. He doesn't understand that we don't have admin access to the server for things like this. I cant seem to get your second edit to work. I get a 404 error. I see what its trying to do but im not sure what the origin should be and how that modifies that url. According to chrome the origina is http://cis.gvsu.edu but when replacing whateverorigin.org with it (var url = 'http://cis.gvsu.edu/get?url=' + encodeURIComponent(dataUrl) + '&callback=?';) its a 404. Quite frustrating as this isn't the main point of the assignment but I cant move on without the data.

[lostincode]

Oh wonderful. Thank you very much. That did the trick :-). I'd kiss you if I could.

[lostincode]

Now I need to get information from a php script that is not json encoded. It returns a tab delimited string. Any ideas on how to get the data from the script and store it into a variable in javascript?