====== GetRectImage ======
Returns image of the specified  area of the browser window.
===== Syntax =====
<code pascal>function GetRectImage(aLeft: integer; aTop: integer; aRight: integer;
  aBottom: integer): TCSImage; overload;

function GetRectImage(aRect: TCSRect): TCSImage; overload;</code>
==== Parameters ====
  * **//aLeft//** 
    * //type:// integer
    * //functions:// X coordinate of the upper-left corner of the rectangular area relative to browser window
  * **//aTop//** 
    * //type:// integer
    * //functions:// Y coordinate of the upper-left corner of the rectangular area relative to browser window
  * **//aRight//** 
    * //type:// integer
    * //functions:// X coordinate of the lower-right corner of the rectangular area relative to browser window
  * **//aBottom//** 
    * //type:// integer
    * //functions:// Y coordinate of the lower-right corner of the rectangular area relative to browser window
  * **//aRect//** 
    * //type:// [[en:wascript:pascal:records:tcsrect|TCSRect]]
    * //functions:// rectangle, area of which has to be obtained in the image
==== Returned value ====
  * //type:// [[en:wascript:pascal:records:tcsimage|TCSImage]]
  * //functions:// image of the specified area

===== Examples =====
  -<code pascal>//Load a page with image (in this case - captcha)
LoadURI('http://www.google.com/recaptcha/learnmore');
//Get an element, containing the image
var ImageElement:=GetElement('img',0,['src'],['google.com/recaptcha/']);
//Get an element rectangle
var ImageRect:=GetElementRect(ImageElement);
//Get the image of the rectangle area
var Image:=GetRectImage(ImageRect);
//Deduce to the log  the color of image pixel  with coordinates (10,10)
Log(IntToStr(Image.Pixels[10,10]));</code>