Modification of the page model

lib/template/root.layout

@@ -8,18 +8,17 @@
   </head>
 
   <body>
-    <div id="header">
+		<r:layout_part name='header'>
       <r:language_bar />
       <r:snippet name='nav' />
-    </div>
+		</r:layout_part>
       
-	  <div id="container">  
-		  <r:content />	
-	  </div>
+	  <r:layout_part name="main_content">	
+	  </r:layout_part>
 
-    <div id="footer">        
+    <r:layout_part name="footer">        
       <r:snippet name='footer' />
-    </div>
+    </r:layout_part>
       
   </body>
 </html>