<?php 

if(!empty($_GET['fa_asset_category_id']) && !empty($_GET['fa_asset_book_id'])){
 $$class_second = fa_book_category_assoc::find_by_asset_book_and_category($_GET['fa_asset_book_id'], $_GET['fa_asset_category_id']);
}
if(empty($$class_second)){
 $$class_second = new fa_book_category_assoc();
}

?>