====== AddExtensionFilter ======
Adds [[http://en.wikipedia.org/wiki/Filename_extension|extension]], files of which will be ignored while the documents loading.
===== Syntax =====
<code pascal>procedure AddExtensionFilter(aExtension: string);</code>
==== Parameters ====
  * **//aExtension//** 
    * //type:// string
    * //functions:// filtered extension
===== Notes =====
  * The following filters are used by default:
    -.gif
    -.jpeg
    -.jpg
    -.png
    -.tiff
  * Only downloaded from the primary domain files are filtered.
===== Examples =====
  -<code pascal>//Forbid to download "jpeg" files
AddExtensionFilter('.jpeg');</code>