WordPress/wp-admin/js/postbox.js

(function($) {
	postboxes = {
		add_postbox_toggles : function(page) {
			$('.postbox h3').before('<a class="togbox">+</a> ');
			$('.postbox a.togbox').click( function() { $($(this).parent().get(0)).toggleClass('closed'); save_postboxes_state(page); } );

			$('.hide-postbox-tog').click( function() {
				var box = jQuery(this).val();
				var show = jQuery(this).attr('checked');
				if ( show ) {
					jQuery('#' + box).show();
				} else {
					jQuery('#' + box).hide();
				}
				save_postboxes_state(page);
			} );

			if ( $.browser.msie ) {
				$('#side-sortables').append( '<div id="make-it-tall"></div>' );
			} else {
				$('#side-sortables').append( '<div id="make-it-tall" style="margin-bottom: -2000px; padding-bottom: 2001px"></div>' );
			}
			$('#wpbody-content').css( 'overflow', 'hidden' );
			
			this.init(page);
		},
	
		expandSidebar : function( doIt ) {
			if ( doIt || $.trim( $( '#side-info-column' ).text() ) ) {
				$( '#post-body' ).addClass( 'has-sidebar' );
				$( '#side-sortables' ).css('z-index','0');
			} else {
				$( '#post-body' ).removeClass( 'has-sidebar' );
				$( '#side-sortables' ).css('z-index','-1');
			}
		},

		init : function(page) {
			jQuery('.meta-box-sortables').sortable( {
				connectWith: [ '.meta-box-sortables' ],
				items: '> .postbox',
				handle: 'h3',
				stop: function() {
					if ( 'side-sortables' == this.id ) { // doing this with jQuery doesn't work for some reason: make-it-tall gets duplicated
						var makeItTall = document.getElementById( 'make-it-tall' );
						var sideSort = makeItTall.parentNode;
						sideSort.removeChild( makeItTall );
						sideSort.appendChild( makeItTall );
						
					}
					var postVars = {
						action: 'meta-box-order',
						_ajax_nonce: jQuery('#meta-box-order-nonce').val(),
						page: page
					}
					jQuery('.meta-box-sortables').each( function() {
						postVars["order[" + this.id.split('-')[0] + "]"] = jQuery(this).sortable( 'toArray' ).join(',');
					} );
					jQuery.post( postboxL10n.requestFile, postVars, function() {
						postboxes.expandSidebar();
					} );
				},
				over: function(e, ui) {
					if ( !ui.element.is( '#side-sortables' ) )
						return;
					postboxes.expandSidebar( true );
				}
			} );
		}
	}
}(jQuery));

jQuery(document).ready(function(){postboxes.expandSidebar();});

function save_postboxes_state(page) {
	var closed = jQuery('.postbox').filter('.closed').map(function() { return this.id; }).get().join(',');
	var hidden = jQuery('.postbox').filter(':hidden').map(function() { return this.id; }).get().join(',');
	jQuery.post(postboxL10n.requestFile, {
		action: 'closed-postboxes',
		closed: closed,
		hidden: hidden,
		closedpostboxesnonce: jQuery('#closedpostboxesnonce').val(),
		page: page
	});
}