// JavaScript Document
function openVideo() {
  var w = 820;
  var h = 600;
  var l = screen.availWidth/2-(w/2);
  var t = screen.availHeight/2-(h/2);
  window.open('/virtualtour/index.html', 'Virtual Tour', 'width='+w+',height='+h+',top='+t+',left='+l);
}