function buscaConcess(uf)
{
   valIni = uf;
   document.getElementById('loading').style.display='block';
   if(valIni) {
      ajax = ajaxInit();
      if(ajax)
      {
         try {
            //ajax.open("GET", "http://semeador.johndeere.com.br/redeconcessionarios/pubBuscaConcess.jsp?uf=" + valIni, true);

            ajax.open("POST", "pubBuscaConcess.jsp", true);
            ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");

            ajax.onreadystatechange = function()
            {
               if(ajax.readyState == 4)
               {
                  if(ajax.status == 200)
                  {
                     retorno = unescape(ajax.responseText.replace(/\+/g," "));

                     //this.frameElement.height = 350;
                     ini_qtde = retorno.indexOf('<font face=verdana size=2><b>');
                     end_qtde = retorno.indexOf('</b> registros(s)');
                     qtde = retorno.substr(ini_qtde+29,(end_qtde-(ini_qtde+29)));
                     qtde = (qtde==""?0:qtde);
                     //this.frameElement.height = this.document.body.offsetHeight+(qtde*111);

                     document.getElementById("resultado").innerHTML = retorno;
                     document.getElementById('loading').style.display='none';
                  } else {
                     alert(ajax.statusText);
                     document.getElementById('loading').style.display='none';
                  }
               }
            }
            //ajax.send(null);

            ajax.send("uf=" + valIni);

         } catch(e) {
            alert(e.message);
            document.getElementById('loading').style.display='none';
         }
      }
   }
}