I made simple wordpress plugin and i must work this wordpress plugin only below full posts although not home based page. Wordpress plugin only read images from the database and set images below posts.

   function get_image_big() 

   {             
     echo file_get_contents('http://demotivators.us/widget/big_demotivators.php');        
   }

   add_action( 'loop_end', 'get_image_big');

How off this script in wordpress webpage in most styles ? apologize for my british.

You have to add your code to theme templates (without notice to exhibit your images). For instance, if you wish to show your images in the finish of single publish, you have to add call of the function there. It'll appears like this:

if ( function_exists( 'get_image_big' ) ) { get_image_big(); }

use is_home() and is_front_page() calls to identify that webpage is proven.