====== base64Encode ======
Encodes the specified string by Base64 method
===== Syntax =====
<code javascript>base64Encode = function(aText);</code>
==== Parameters ====
  * **//aText//** 
    * //functions:// source string
==== Returned value ====
  * //functions:// encoded string
===== Examples =====
  -<code javascript>var encoded = base64Encode('base64');
//encoded = 'YmFzZTY0'</code>