function certifica(sitio_id,path) {
  path = path.toLowerCase();
  path = path.replace(/[^0-9a-z;\/\_\-]/g, '');
  path = path.replace(/;/g, '/');
  Certifica_resolucion="otro";
  Certifica_colores="otro";
  Certifica_java_activado="otro";
  Certifica_browser="otro";
  Certifica_version="otro";
  Certifica_desde=""+escape(document.referrer);
  Certifica_cpu_XXXX="otro";
  Certifica_idioma_sistema="otro";
  if (Certifica_desde== "") Certifica_desde="otro";
  Certifica_resolucion=screen.width;
  Certifica_browser=navigator.appName;
  Certifica_version_navegador=navigator.appVersion.charAt(0) + navigator.appVersion.charAt(1);
  Certifica_version_navegador=Certifica_version_navegador + navigator.appVersion.charAt(2);
  Certifica_cpu_XXXX=navigator.cpuClass;
  Certifica_idioma_sistema=navigator.userLanguage;
  if (Certifica_browser != "Netscape") {
    Certifica_colores=screen.colorDepth;
  }else{
    Certifica_colores=screen.pixelDepth;
  };
  Certifica_java_activado=navigator.javaEnabled();
  Certifica_NS2Ch_a=0;
  if (navigator.appName == "Netscape" && navigator.appVersion.charAt(0) == "2")  Certifica_NS2Ch_a=1;
  if (Certifica_NS2Ch_a == 0) {
    Certifica_url_source="http://hits.e.cl/cert/hit.dll?sitio_id="+sitio_id+"&path=" + path + "&vc=2.05";
    Certifica_url_source+="&size="+Certifica_resolucion+"&colors="+Certifica_colores;
    Certifica_url_source+="&referer="+Certifica_desde+"&java="+Certifica_java_activado;
    Certifica_url_source+="&idio="+Certifica_idioma_sistema+"&cpu="+Certifica_cpu_XXXX+"&vers='"+Certifica_version_navegador+"'";
    document.writeln("<a><img name=\"certifica_img\" border=0 height=0 width=0 src=\"" + Certifica_url_source + "\"></a>");
  };
};