function showImg(i) {
  d  = document.getElementById('viewer')
  di = document.getElementById('viewer_img')

  var iebody = (document.compatMode && document.compatMode != "BackCompat") ? document.documentElement : document.body

  var dsocleft = document.all ? iebody.scrollLeft : pageXOffset
  var dsoctop  = document.all ? iebody.scrollTop  : pageYOffset

  var top_offset = ( dsoctop > 120 ) ? 10 : (120 - dsoctop);

  d.style.left = (dsocleft + 80) + 'px'
  d.style.top  = (dsoctop  + top_offset) + 'px'

  d.style.display = 'block'
  di.innerHTML = '<img src="' + i + '">'
}