Konstantin Trunov

document.getElementById('div0').style.display = "block";

window.onload = function() {
// Setup - hide all divs initially, assign event to links
  HideDivs();
  for (var i = 0; i < allDivs.length; i++) {
    var link = i;
    document.getElementById(link).addEventListener("click", ShowDiv, false);
  }
  
  document.getElementById('div0').style.display = "block";
}