( function( $ ){

	$( document ).ready( function () {

		// Expand/Collapse on click

		$( '.accordion-container' ).on( 'click keydown', '.accordion-section-title', function( e ) {

			if ( e.type === 'keydown' && 13 !== e.which ) // "return" key

					return;

			e.preventDefault(); // Keep this AFTER the key filter above

			accordionSwitch( $( this ) );

		});

		// Re-initialize accordion when screen options are toggled

		$( '.hide-postbox-tog' ).click( function () {

			accordionInit();

		});

	});

	var accordionOptions = $( '.accordion-container li.accordion-section' ),

		sectionContent   = $( '.accordion-section-content' );

	function accordionInit () {

		// Rounded corners

		accordionOptions.removeClass( 'top bottom' );

		accordionOptions.filter( ':visible' ).first().addClass( 'top' );

		accordionOptions.filter( ':visible' ).last().addClass( 'bottom' ).find( sectionContent ).addClass( 'bottom' );

	}

	function accordionSwitch ( el ) {

		var section = el.closest( '.accordion-section' ),

			siblings = section.closest( '.accordion-container' ).find( '.open' ),

			content = section.find( sectionContent );

		if ( section.hasClass( 'cannot-expand' ) )

			return;

		if ( section.hasClass( 'open' ) ) {

			section.toggleClass( 'open' );

			content.toggle( true ).slideToggle( 150 );

		} else {

			siblings.removeClass( 'open' );

			siblings.find( sectionContent ).show().slideUp( 150 );

			content.toggle( false ).slideToggle( 150 );

			section.toggleClass( 'open' );

		}

		accordionInit();

	}

	// Initialize the accordion (currently just corner fixes)

	accordionInit();

})(jQuery);