tC.internalvars.metalanguage = "";
var metas = document.getElementsByTagName('meta');
for (var i=0; i<metas.length; i++) {
   if (typeof metas[i].getAttribute("http-equiv") != "undefined" && metas[i].getAttribute("http-equiv") == "Content-Language" && typeof metas[i].getAttribute("content") != "undefined" &&  metas[i].getAttribute("content") !== "") {
     tC.internalvars.metalanguage = metas[i].getAttribute("content");
   }
}