$the_portfolio.on('click', '.et_pb_portfolio_filter a', function(e){
						e.preventDefault();
						var category_slug = $(this).data('category-slug');
						var $the_portfolio = $(this).parents('.et_pb_filterable_portfolio');
						var $the_portfolio_items = $the_portfolio.find('.et_pb_portfolio_items');

						if ( 'all' == category_slug ) {
							$the_portfolio.find('.et_pb_portfolio_filter a').removeClass('active');
							$the_portfolio.find('.et_pb_portfolio_filter_all a').addClass('active');

							// remove all items from the portfolio items container
							$the_portfolio_items.empty();

							// fill the portfolio items container with cached items from memory
							$the_portfolio_items.append( all_portfolio_items.find( '.et_pb_portfolio_item' ).clone() );
							$the_portfolio.find('.et_pb_portfolio_item').addClass('active');
						} else {
							$the_portfolio.find('.et_pb_portfolio_filter_all').removeClass('active');
							$the_portfolio.find('.et_pb_portfolio_filter a').removeClass('active');
							$the_portfolio.find('.et_pb_portfolio_filter_all a').removeClass('active');
							$(this).addClass('active');

							// remove all items from the portfolio items container
							$the_portfolio_items.empty();

							// fill the portfolio items container with cached items from memory
							$the_portfolio_items.append( all_portfolio_items.find( '.et_pb_portfolio_item.project_category_' + $(this).data('category-slug') ).clone() );

							$the_portfolio_items.find('.et_pb_portfolio_item').removeClass('active');
							$the_portfolio_items.find('.et_pb_portfolio_item.project_category_' + $(this).data('category-slug') ).addClass('active').removeClass( 'inactive' );
						}

						set_filterable_grid_items( $the_portfolio );
						setTimeout(function(){
							set_filterable_portfolio_hash( $the_portfolio );
						}, 500 );

						$the_portfolio.find('.et_pb_portfolio_item').removeClass( 'first_in_row last_in_row' );
						et_pb_set_responsive_grid( $the_portfolio, '.et_pb_portfolio_item:visible' );
					});