http://www.abigailvigoa.com/wp-content/themes/abigail/js/jquery.mobilemenu.js?ver=1.0

1/**
2 * jQuery Mobile Menu 
3 * Turn unordered list menu into dropdown select menu
4 * version 1.0(31-OCT-2011)
5 * 
6 * Built on top of the jQuery library
7 *   http://jquery.com
8 * 
9 * Documentation
10 *   http://github.com/mambows/mobilemenu
11 */
12(function($){
13	$.fn.mobileMenu = function(options) {
14		var defaults = {
15				defaultText: 'Navigate to...',
16				className: 'select-menu',
17				subMenuClass: 'sub-menu',
18				subMenuDash: '–'
19				},
20			settings = $.extend( defaults, options ),
21			el = $(this);
22			
23		$("head").append('<style type="text/css">@media(max-width: 767px){.sf-menu{display:none;} .select-menu{display: block;}}</style>')
24		
25		this.each(function(){
26			// ad class to submenu list
27			el.find('ul').addClass(settings.subMenuClass);
28			
29			// Create base menu
30			$('<select />',{'class':settings.className}).insertAfter(el);
31			
32			// Create default option
33			$('<option />', {"value":'#', "text":settings.defaultText}).appendTo( '.' + settings.className );
34			
35			// Create select option from menu
36			el.find('a,.separator').each(function(){
37				var $this  = $(this),
38					optText = $this.context.firstChild.textContent,
39					optSub = $this.parents( '.' + settings.subMenuClass ),
40					len   = optSub.length,
41					dash;
42				// if menu has sub menu
43				if( $this.parents('ul').hasClass( settings.subMenuClass ) ) {
44					dash = Array( len+1 ).join( settings.subMenuDash );
45					optText = dash + optText;
46				}
47				if($this.is('span')){
48					// Now build menu and append it
49					$('<optgroup />', {"label":optText,}).appendTo('.' + settings.className);
50				}else{
51					// Now build menu and append it
52					$('<option />', {"value":this.href, "html":optText, "selected":(this.href == window.location.href)}).appendTo( '.' + settings.className );
53				}
54			}); // End el.find('a').each
55			
56			// Change event on select element
57			$('.' + settings.className).change(function(){
58				var locations = $(this).val();
59				if( locations !== '#' ) {
60					window.location.href = $(this).val();
61				}
62			});
63		}); // End this.each
64		return this;
65	};
66})(jQuery);