var iHero = 1;
var iTimeout;

function setImage(id) {
  clearInterval(iTimeout);
  iHero = id - 1;
  nextHero();
  runHeros();
}

function runHeros() {
  iTimeout = setInterval(nextHero, 6000)
}

function nextHero() {
  iHero++;
  if (iHero > 3) {
    iHero = 1;
  }

  document.getElementById("imgBox1").src = "/_images/hero/boxOff.png";
  //document.getElementById("divHero1").style.display = "none";
  document.getElementById("imgBox2").src = "/_images/hero/boxOff.png";
  //document.getElementById("divHero2").style.display = "none";
  document.getElementById("imgBox3").src = "/_images/hero/boxOff.png";
  document.getElementById("divHero3").style.display = "none";

  if (iHero == 1) {
    document.getElementById("imgHero").src = "/_images/hero/bk-boats-mike-doug.jpg";
    document.getElementById("imgBox1").src = "/_images/hero/boxOn.png";
    //document.getElementById("divHero1").style.display = "inline";
  }
  else if (iHero == 2) {
    document.getElementById("imgHero").src = "/_images/hero/bk-best-in-mchenry.jpg";
    document.getElementById("imgBox2").src = "/_images/hero/boxOn.png";
    //document.getElementById("divHero2").style.display = "inline";
  }
  else {
    document.getElementById("imgHero").src = "/_images/hero/bk-gopro-cameras.jpg";
    document.getElementById("imgBox3").src = "/_images/hero/boxOn.png";
    document.getElementById("divHero3").style.display = "inline";
  }
}