====== base64Decode ======
Decodes the specified string encoded by Base64
===== Syntax =====
<code javascript>base64Decode = function(aText);</code>
==== Parameters ====
  * **//aText//** 
    * //functions:// encoded string
==== Returned value ====
  * //functions:// decoded string

===== Examples =====
  -<code javascript>var decoded = base64Decode('YmFzZTY0');
//decoded = 'base64'</code>