if (navigator.userAgent.toLowerCase().indexOf('chrome') > -1) {
    var chromeCss = document.createElement("link");

    chromeCss.rel = "stylesheet";
    chromeCss.href = "chrome.css";

    document.getElementsByTagName("head")[0].appendChild(chromeCss);

    $('div#nav ul.dropdown li', this).css('font-size', 'small');

}