function initPopup() {
  var popup  = document.getElementById('pngPopup');
  var pTop   = document.getElementById('pngPopupTop');
  var pBg    = document.getElementById('pngPopupTopBg');
  var pClose = document.getElementById('popupCloseBtn');
  var pOpen  = document.getElementById('reportsEmailLink');

  pBg.style.height = pTop.offsetHeight + 'px';
  popup.style.display = 'none';
  pOpen.onclick  = function() { popup.style.display = 'block'; popup.style.visibility = 'visible'; };
  pClose.onclick = function() { popup.style.display = 'none'; return false; };
}

if(window.attachEvent)
  window.attachEvent('onload', initPopup);
else if(window.addEventListener)
  window.addEventListener('load', initPopup, false);