function idioma() {
	if (navigator.userAgent.indexOf("Opera")!=-1) (language=navigator.language)
	else { if (navigator.appName == "Netscape") (language=navigator.language)
	else language=navigator.browserLanguage };
	
	if (language){language=language.substring(0,2)}
	else {language="zz"}

	switch (language) {
		case "en" : window.location="english/index.html"; break;
		case "zz" : window.location="english/index.html"; break;
  }
}