var HOST = location.href;
var HOSTBASE = '';
var HOSTBASETMP = '';

HOST = HOST.substring(0, HOST.lastIndexOf('\/'));
HOSTBASE = HOST.substring(0, HOST.lastIndexOf('\/'));
HOST = HOSTBASE + "/servicio/";

HOSTBASE = HOSTBASE.substring(0, HOSTBASE.lastIndexOf('\/'));
HOSTBASETMP = HOSTBASE;
HOSTBASE = HOSTBASE.substring(0, HOSTBASE.lastIndexOf('\/'));
HOSTBASE = HOSTBASE.substring(0, HOSTBASE.lastIndexOf('\/'));

if (HOSTBASE.length <= 'http://wwww'.length)
    HOSTBASE = HOSTBASETMP;

function ajax_call_updater(contenedor, data, clazz, action, callbackFunct){
   //var url = HOST + '	.php';
   var url = HOST + 'interfazWebUpdate.php';
   var obj = {
      method :'post',
      parameters :"__class=" + clazz + "&__action=" + action + "&" + data,
      onSuccess : function(resp, result) {
      callbackFunct.apply(this, [ result, resp.responseText ]);
   },
      onFailure : function(resp, result) {
      alert("Error de conexión: " + resp.responseText);
        }
   }
   new Ajax.Updater(contenedor, url,obj);
}