https://www.duaexplorer.com/Scripts/jquery.mobile.themeswitcher.js

1//quick & dirty theme switcher, written to potentially work as a bookmarklet
2(function($){
3	$.themeswitcher = function(){
4		if( $('[data-'+ $.mobile.ns +'-url=themeswitcher]').length ){ return; }
5		var themesDir = 'http://jquerymobile.com/test/css/themes/',
6			themes = ['default','valencia'],
7			currentPage = $.mobile.activePage,
8			menuPage = $( '<div data-'+ $.mobile.ns +'url="themeswitcher" data-'+ $.mobile.ns +'role=\'dialog\' data-'+ $.mobile.ns +'theme=\'a\'>' +
9						'<div data-'+ $.mobile.ns +'role=\'header\' data-'+ $.mobile.ns +'theme=\'b\'>' +
10							'<div class=\'ui-title\'>Switch Theme:</div>'+
11						'</div>'+
12						'<div data-'+ $.mobile.ns +'role=\'content\' data-'+ $.mobile.ns +'theme=\'c\'><ul data-'+ $.mobile.ns +'role=\'listview\' data-'+ $.mobile.ns +'inset=\'true\'></ul></div>'+
13					'</div>' )
14					.appendTo( $.mobile.pageContainer ),
15			menu = menuPage.find('ul');	
16		
17		//menu items	
18		$.each(themes, function( i ){
19			$('<li><a href="#" data-'+ $.mobile.ns +'rel="back">' + themes[ i ].charAt(0).toUpperCase() + themes[ i ].substr(1) + '</a></li>')
20				.bind("vclick", function(){
21					addTheme( themes[i] );
22					menuPage.dialog( "close" );
23					return false;
24				})
25				.appendTo(menu);
26		});	
27		
28		//remover, adder
29		function addTheme(theme){
30			$('head').append( '<link rel=\'stylesheet\' href=\''+ themesDir + theme +'/\' />' );
31		}
32
33		//create page, listview
34		menuPage.page();
35
36	};	
37})(jQuery);