svg animation test

HTML

<!DOCTYPE html>
        <html>
        <head>
        <style>
        svg{
            background-color: #FFFFFF;
        }
        </style>
        </head> 
        
        <body> 
    <script src="./SnapSVGAnimator/js/vendor/snap.svg/snap.svg-min.js"></script>
    <script src="./SnapSVGAnimator/js/SnapSVGAnimator.min.js"></script>

    <script type="text/javascript"> 
        var jsonfile = "Untitled.json",
            fps = 24,
            width = 550,
            height = 400,
            AJAX_req;

    AJAX_JSON_Req(jsonfile);

    function handle_AJAX_Complete() {
        if( AJAX_req.readyState == 4 && AJAX_req.status == 200 )
        {
            json = JSON.parse(AJAX_req.responseText);
            comp = new SVGAnim(
                           json,
                           width,
                           height,
                           fps
                           );
            
        }
    }

    function AJAX_JSON_Req( url )
    {
        AJAX_req = new XMLHttpRequest();
        AJAX_req.open("GET", url, true);
        AJAX_req.setRequestHeader("Content-type", "application/json");
        
        AJAX_req.onreadystatechange = handle_AJAX_Complete;
        AJAX_req.send();
    }

            </script>
        </body>
        </html>