var getHead = function() {
                return document.getElementsByTagName("head")[0];
            };
            var includeJavascriptFile = function(url) {
                if (document.body == null) {
                    document.write("<script src='" + url + "' type='text/javascript'></script>");
                } else {
                    var script = document.createElement("script");
                    script.type = "text/javascript";
                    script.language = "JavaScript";
                    script.src = url;
                    getHead().appendChild(script);
                }
            };
            var includeCssFile = function(url) {
                if (document.body == null) {
                    document.write("<link rel='stylesheet' href='" + url + "' type='text/css'/>");
                } else {
                    var link = document.createElement("link");
                    link.setAttribute("rel", "stylesheet");
                    link.setAttribute("type", "text/css");
                    link.setAttribute("href", url);
                    getHead().appendChild(link);
                }
            }