====== removeElementChildren ======
Removes the child elements of the specified element corresponding to the specified tag.
===== Syntax =====
<code javascript>removeElementChildren = function(aElement, aTagName);</code>
==== Parameters ====
  * **//aElement//** 
    * //function:// target element
  * **//aTagName//** 
    * //function:// tag of elements to delete
===== Notes =====
  * If aTagName is an empty string, it will be deleted all child elements.
===== Examples =====
  -<code javascript>//Загружаем страницу google.ru с запросом
loadURI('https://www.google.ru/#newwindow=1&q=test+request');
//Get the first element h3
var element = getElement('h3', 0);
//Remove the child links
removeElementChildren(element,'a');</code>