Can't get AJAX to work! I have a marquee on a website, got it working! But I want it to find the text of the marquee in a text file, and I want it to read the text in the text file (which is one line) and assign it to the variable called content, which is a global variable in the script tag.

When I run the website (local IIS), the marquee text is: undefined (without the quotes).

Why isn't it assigning the text to the variable content?

    var content



    function loadXMLDoc()

    {   

        var textfile;

        if (window.XMLHttpRequest)

        { 

            textfile = new XMLHttpRequest(); 

        }

        textfile.onreadystatechange = function ()

        {   

            if (textfile.readyState == 4 && textfile.status == 200)

            { 

                content = textfile.responseText; 

            }

        }

        textfile.open(GET, C:UsersFaresDropboxSyncCollegeComputingDeltaOneMarqueeText.txt, true);

        textfile.send();

    }

EDIT: A million thanks to @kuncajs, as he pointed out I forgot to call the function! :) Fixed! Thanks to everyone else!