added marking of selected element with 'ui-btn-active' class

ch03_05.html

@@ -27,7 +27,7 @@
             <div data-role="footer" data-position="fixed">
                 <div data-role="navbar">
                     <ul>
-                        <li><a href="" data-icon="home">Home</a></li>
+                        <li><a href="" data-icon="home" class="ui-btn-active">Home</a></li>
                         <li><a href="" data-icon="search">Contacts</a></li>
                         <li><a href="" data-icon="info">Events</a></li>
                         <li><a href="" data-icon="grid">News</a></li>