// (c) by Matthias Tomaschek

function togglefullscreen()
{
  var mc = document.getElementById("modalcover");
  var fs = document.getElementById("fullscreendiv");
  var fsp = document.getElementById("fspano");

  if(fs.style.display == "block")
  {
    fs.style.display = "none";
    mc.style.display = "none";
  }
  else
  {
    var wheight = 0;
    if(document.body && document.body.offsetHeight)
    {
      wheight = document.body.offsetHeight;
    }
    if(document.compatMode=='CSS1Compat' && document.documentElement && document.documentElement.offsetHeight)
    {
      wheight = document.documentElement.offsetHeight;
    }
    if(window.innerHeight)
    {
      wheight = window.innerHeight;
    }

    mc.style.height = wheight + 'px';

    fs.style.display = "block";
    mc.style.display = "block";
  }
}