gistfile1.txt

/*
support FullScreenMode
*/

var FullScn = {
        enterFullScn: function()
        {
                var e = document.getElementById("fullscreen-wrapper");
                if (FullScn.RunPrefixMethod(document, "FullScreen") || FullScn.RunPrefixMethod(document, "IsFullScreen")) {
                        FullScn.RunPrefixMethod(document, "CancelFullScreen");
                }
                else {
                        FullScn.RunPrefixMethod(e, "RequestFullScreen");
                }
        },
        //cross-browser compatibility
        RunPrefixMethod: function(obj, method)
        {
                var pfx = ["webkit", "moz", "ms", "o", ""];
                var p = 0, m, t;
                while (p < pfx.length && !obj[m]) {
                        m = method;
                        if (pfx[p] == "") {
                                m = m.substr(0,1).toLowerCase() + m.substr(1);
                        }
                        m = pfx[p] + m;
                        t = typeof obj[m];
                        if (t != "undefined") {
                                pfx = [pfx[p]];
                                return (t == "function" ? obj[m]() : obj[m]);
                        }
                        p++;
                }

        }
};