function increaseFS(css) {
 	var CSSlink = "/Styles/enlarge/" + css + ".css";
           // the empty style sheet
            var sheet = document.styleSheets[0];
            if (sheet.addImport) {      // Internet Explorer
                sheet.addImport(CSSlink);
            }
            else {
                if (sheet.insertRule) {     // Firefox, Opera and Safari
                    sheet.insertRule ("@import url("+CSSlink+");", 0);
                }
            }
}