var d = document;
function addLoadEvent(func) {
  // http://simon.incutio.com/archive/2004/05/26/addLoadEvent
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}
function popup(link, name, w, h, options) {
  window.open(link, name, 'width='+w+', height='+h+','+options);
}
function launch_demo() {
  var options = ''
  var w = 520;
  if (screen.height && screen.width) {
      var top = (screen.height - w) / 2;
      var left = (screen.width - w) / 2;
      options += 'top='+top+',left='+left;
  }
  popup('http://www.eurosnap.at/demo', 'Demo', w, w, options);
  return false;
}