var index = 0, count = 0;
var skiRegionStarted = 0;

function change()
{
  var i;
  for (i = 0; i < count; i++)
  {
    var v1 = document.getElementById('ssr'+i);
    v1.style.display = 'none'
  }

  index++;
  if (index == count)
    index = 0;
  var v2 = document.getElementById('ssr'+index);

  v2.style.display = 'block';

  setTimeout(change, 6000);
}

function start_skiregion()
{
  var e;
  
  for (count = 0; ; count++)
  {
    e = document.getElementById('ssr'+count);
    if (e == null)
      break;
  }
  
  if (count > 1)
  {
    if (skiRegionStarted)
      return;
    skiRegionStarted = 1;
    
    setTimeout('change()', 5000);
    index = Math.floor(Math.random() * count);
  }
}

addEvent(window, 'load', start_skiregion);

//window.onload = start_skiregion;