jquery plugin to add collapser do tags

jquery.collapse.js

jQuery.fn.collapse = function(options) {
        // This plugin requires jquery.cookie.js plugin
	// Load plugin for handling cookies
	// $.getScript('jquery/plugins/jquery.cookie.js');

    // Default values
    var defaults = {
		collapsed: true,
		ignore: [],
		rememberState: true
    }
                 
	var settings =  $.extend(defaults, options);


	return this.each(function() {	
		// Handle rememered state from cookie
		var cookieName = "collapse.js-" + $(this).attr("id") + '-collapsed';
		if (settings.rememberState) {
			if ($.cookie(cookieName) === 'true') {
				settings.collapsed = true;
			} else if ($.cookie(cookieName) === 'false') {
				settings.collapsed = false;
			}
		}

		// Create collapsor <div> with class="collapsor"		
		$(this).find('lh a').append('<div class="collapsor" style="float:right;"></div>');
		$collapsor = $(this).find('.collapsor');
		
		// Find items <li> to collapse and set class="collapse"
		$allItems = $(this).find('li');
		$allItems.addClass('collapse');
		$.each(settings.ignore, function(index, value) {
			$allItems.filter(':contains("' + value + '")').removeClass('collapse'); 
		});	

		// Create a toggler for the collapsor icon
		$collapsor.addClass('ui-icon ui-icon-triangle-1-s');
		$collapsor.toggle(function() {
			$(this).removeClass('ui-icon-triangle-1-s').addClass('ui-icon-triangle-1-e');
			$.cookie(cookieName, 'true');
		}, function() {
			$(this).removeClass('ui-icon-triangle-1-e').addClass('ui-icon-triangle-1-s');
			$.cookie(cookieName, 'false');
		});

		// Create a toggler for showing/hiding collapseble items
        $collapsor.click(function() {
			$collapseItems = $(this).closest('ul').find('.collapse');
			$collapseItems.toggle('fast');
		});
		
		// Display initial state
		if (settings.collapsed) {
			$collapsor.click();
			$collapseItems = $collapsor.closest('ul').find('.collapse');
			$collapseItems.hide();
		}

	});

};