mojombo

require 'digest/md5'

def gfm(text)
  # Extract pre blocks
  extractions = {}
  text.gsub!(%r{<pre>.*?</pre>}m) do |match|
    md5 = Digest::MD5.hexdigest(match)
    extractions[md5] = match
    "{gfm-extraction-#{md5}}"
  end

jeffkreeftmeijer

.mouse, #preview{
  position: absolute;
  background-repeat: no-repeat;
  height: 22px;
  min-width: 15px;
  z-index: 100;
}

.mouse{
  background-image: url('../images/cursor.png');