title: Encoding and decoding
body: <p>I am looking to encode some text that could be 1 charchter long or or 10,000 or infinite
  and decode (reverse the algorithm).</p>
  
  <p>I am looking something like MD5 on PHP, but reversable, as MD5 is one way.</p>
  
  <p>This could be server side or JavaScript. If both, then it's even better.</p>