if(!Array.indexOf){
  Array.prototype.indexOf = function(obj){
    for(var i=0; i<this.length; i++){
      if(this[i]==obj){
        return i;
      }
    }
    return -1;
  }
}

function selectlang(idi){
	idis = Array('ca', 'en', 'es');
	if(!(idis.indexOf(idi)<0)){
		strurl = document.location.href;
		strhost = strurl.substring(7, strurl.indexOf('/', 7));
		strpage = strurl.substring(strurl.lastIndexOf('/')+1)
		//alert("host: " + strhost);
		//alert("page: " + strpage);
		//alert("index: " + idis.indexOf(idi));
		//alert("host: " + strhost + ". Page: " + strpage + ". URL: http://" + strhost + "/" + idi + "/" + strpage);
		document.location.href = "http://" + strhost + "/" + idi + "/" + strpage;
	}else
		alert("No puede ser!!!!: " + idis.indexOf(idi));
}

//selectlang('es');