diff --git a/js/navigation.js b/js/navigation.js
index 22f7444e..d4f9cf8b 100644
--- a/js/navigation.js
+++ b/js/navigation.js
@@ -4,29 +4,31 @@
  * Handles toggling the navigation menu for small screens.
  */
 ( function() {
-	var container = document.getElementById( 'site-navigation' ),
-	    button    = container.getElementsByTagName( 'h1' )[0],
-	    menu      = container.getElementsByTagName( 'ul' )[0];
+	var container, button, menu;
 
-	if ( undefined == button || undefined == menu )
-		return false;
+	container = document.getElementById( 'site-navigation' )
+	if ( ! container )
+		return;
+
+	button = container.getElementsByTagName( 'h1' )[0];
+	if ( 'undefined' == typeof button )
+		return;
+
+	menu = container.getElementsByTagName( 'ul' )[0];
+
+	// Hide menu toggle button if menu is empty and return early.
+	if ( 'undefined' == typeof menu ) {
+		button.style.display = 'none';
+		return;
+	}
+
+	if ( -1 == menu.className.indexOf( 'nav-menu' ) )
+		menu.className += ' nav-menu';
 
 	button.onclick = function() {
-		if ( -1 == menu.className.indexOf( 'nav-menu' ) )
-			menu.className = 'nav-menu';
-
-		if ( -1 != button.className.indexOf( 'toggled-on' ) ) {
-			button.className = button.className.replace( ' toggled-on', '' );
-			menu.className = menu.className.replace( ' toggled-on', '' );
-			container.className = container.className.replace( 'main-small-navigation', 'navigation-main' );
-		} else {
-			button.className += ' toggled-on';
-			menu.className += ' toggled-on';
-			container.className = container.className.replace( 'navigation-main', 'main-small-navigation' );
-		}
+		if ( -1 != container.className.indexOf( 'toggled' ) )
+			container.className = container.className.replace( ' toggled', '' );
+		else
+			container.className += ' toggled';
 	};
-
-	// Hide menu toggle button if menu is empty.
-	if ( ! menu.childNodes.length )
-		button.style.display = 'none';
 } )();
\ No newline at end of file
diff --git a/style.css b/style.css
index b0e814c0..32362729 100644
--- a/style.css
+++ b/style.css
@@ -441,13 +441,9 @@ a:active {
 	cursor: pointer;
 }
 
-.main-small-navigation ul {
-	display: none;
-}
-
 @media screen and (max-width: 600px) {
 	.menu-toggle,
-	.main-small-navigation ul.nav-menu.toggled-on {
+	.navigation-main.toggled-on .nav-menu {
 		display: block;
 	}
 
@@ -456,6 +452,7 @@ a:active {
 	}
 }
 
+
 /* =Content
 ----------------------------------------------- */