function ShowBoxStart(strBoxes) {
  var objBoxes = document.getElementById('objBoxes');

  var objBoxes = objBoxes.childNodes;

  sintObjects = objBoxes.length;

  sstrObjectList = "";

  for (var i = 0; i < objBoxes.length; i++) {
    sstrObjectList = sstrObjectList + "," + objBoxes[i].id;

    document.getElementById(objBoxes[i].id + 'A').href = "javascript:ShowBox(" + i + ")";

  }

  sstrObjectList = sstrObjectList.substring(1);

  sintObjectLast = 0;

  sarrObjectList = sstrObjectList.split(",");

  var sobjObjectAtivo, sobjObjectBoxAtivo;

  sobjObjectAtivo = document.getElementById(objBoxes[0].id + 'A');
  sobjObjectAtivo.className = "ativo";

  sobjObjectBoxAtivo = document.getElementById(objBoxes[0].id + 'Box');
  sobjObjectBoxAtivo.className = 'on';

  var sobjShowBoxTimer;
}
function ShowBox(intObject) {
  strObject = sarrObjectList[intObject];

  var sobjObjectAtivo = document.getElementById(strObject + 'A');
  sobjObjectAtivo.className = "ativo";

  var sobjObjectBoxAtivo = document.getElementById(strObject + 'Box');
  sobjObjectBoxAtivo.className = "on";

  strObject = sarrObjectList[sintObjectLast];

  sintObjectLast = intObject;

  var sobjObjectAtivo = document.getElementById(strObject + 'A');
  sobjObjectAtivo.className = "";

  var sobjObjectBoxAtivo = document.getElementById(strObject + 'Box');
  sobjObjectBoxAtivo.className = "off";

}

function ShowBoxMuda() {
  strObject = sarrObjectList[sintObjectLast];

  var sobjObjectAtivo = document.getElementById(strObject + 'A');
  sobjObjectAtivo.className = "";

  var sobjObjectBoxAtivo = document.getElementById(strObject + 'Box');
  sobjObjectBoxAtivo.className = "off";

  sintObjectLast++;

	sintObjectLast==sintObjects?sintObjectLast=0:sintObjectLast=sintObjectLast;

  strObject = sarrObjectList[sintObjectLast];

  var sobjObjectAtivo = document.getElementById(strObject + 'A');
  sobjObjectAtivo.className = "ativo";

  var sobjObjectBoxAtivo = document.getElementById(strObject + 'Box');
  sobjObjectBoxAtivo.className = "on";

}

function ShowBoxDesativa() {
	clearTimeout(sobjShowBoxTimer);
}

function ShowBoxAtiva() {
	sobjShowBoxTimer = setInterval('ShowBoxMuda()', 22000);
}

function clearDefault(event) {
  if (event.defaultValue==event.value) event.value = ""
}