====== addURLFilter ======
Adds URL filter.
===== Syntax =====
<code javascript>addURLFilter = function(aURLPart);</code>
==== Parameters ====
  * **//aURLPart//** 
    * //functions:// URL filter
===== Notes =====
  * All the URL, containing aURLPart are filtered 
===== Examples =====
  -<code javascript>//Forbid to download URL, contain "mc.yandex.ru"
addURLFilter('mc.yandex.ru');</code>