var text = null;

setInterval("progAtual()", 180000);  //3 minuto
			
function progAtual() {
	ajax();
	var texto = '';
	var url = 'inc/programacao.php';
	xmlhttp.open("POST",url,true);
	xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
	var div = document.getElementById("programacao");
	div.innerHTML = "<p class=\"atualizando\">Atualizando Programa</p>";
		xmlhttp.onreadystatechange = function() {
    if (xmlhttp.readyState == 4){
      var texto = xmlhttp.responseText;
      	div.innerHTML = texto;  		
        texto = texto.replace(/\+/g, " ");
        texto = unescape(texto);
    }
	}
  xmlhttp.send(texto);
}