动态添加Jss和Css

　　function addJs(jsPath) {
            var oHead = document.getElementsByTagName('HEAD').item(0);
            var oScript= document.createElement("script");
            oScript.type = "text/javascript";
            oScript.src=jsPath;
            oHead.appendChild(oScript);
        }

    function addCss(CssPath) {
        var oHead = document.getElementsByTagName('HEAD').item(0);
        var oLink = document.createElement("link");
        oLink.setAttribute("rel", "stylesheet");
        oLink.setAttribute("type", "text/css");
        oLink.setAttribute("href", CssPath);
        oHead.appendChild(oLink);
    }