var img_array = new Array("/en/img/overview/remote.gif", "/en/img/overview/center.gif", "/en/img/overview/edit2.png", "/en/img/overview/slides2.png", "/en/img/overview/mserver.png");
var curr_img = 0;

function checkImage(img_name) {
  if (!document.images[img_name]) {
	screen_elem = document.getElementById("screen_action");
    screen_elem.innerHTML = "<a href='#' onClick='playDemo();return true'><img src='/en/img/action.gif' ></a>";
	screen_elem = document.getElementById("screen");
    screen_elem.innerHTML = "<img name='" + img_name + "' src='/en/img/overview/remote.gif' width='590' height='350'>";
  }
}

function rotateImages() {
  curr_img++;
  if (curr_img >= img_array.length) {
    curr_img = 0;
  }
  setImage('screen', img_array[curr_img], false);
  timeout_id = setTimeout('rotateImages()',5000);
}

timeout_id = setTimeout('rotateImages()',5000);

function hasQuickTime() {
  if (!navigator.mimeTypes)
    return false;
  else
    return (navigator.mimeTypes['video/quicktime'] != null);
}

function playDemo(mov_name) {
  if (!hasQuickTime()) {
    alert("Sorry but the action demo video can not be played (QuickTime not installed or browser not supported.)");
  } else {
	screen_elem = document.getElementById("screen_action");
    screen_elem.innerHTML = "<br>";
	screen_elem = document.getElementById("screen");
    screen_elem.innerHTML = "<embed mime-type='video/quicktime' src='" + mov_name + "' controller='true' autoplay='true' width='640' height='380'>";
  }
}