动态加载JS和CSS文件(2)

            document.getElementsByTagName(p)[0].appendChild(element);

            if (callback) {

                //ie

                if (JSLoader.browser.ie) {

                    element.onreadystatechange = function () {

                        if (this.readyState == 'loaded' || this.readyState == 'complete') {

                            callback();

                        }

                    };

                } else if (JSLoader.browser.moz) {

                    element.onload = function () {

                        callback();

                    };

                } else {

                    callback();

                }

            }

        }

        function loadCssFile(files, callback) {

            var urls = files && typeof (files) == "string" ? [files] : files;

            for (var i = 0, len = urls.length; i < len; i++) {

                var cssFile = document.createElement("link");

                cssFile.setAttribute('type', 'text/css');