diff --git a/apps/challenges/challenges.py b/apps/challenges/challenges.py
new file mode 100644
index 0000000..cf2ae9d
--- /dev/null
+++ b/apps/challenges/challenges.py
@@ -0,0 +1,63 @@
+from tower import ugettext_lazy as _lazy
+
+
+challenges = {
+    # Level 1
+    'lvl1_ch1': _lazy(u'Share your Spark with one other person'),
+    'lvl1_ch2': _lazy(u'Add your location'),
+    'lvl1_ch3': _lazy(u'Tell us where you got your Spark'),
+    
+    # Level 2
+    'lvl2_ch1': _lazy(u'Obtain a share from Facebook'),
+    'lvl2_ch2': _lazy(u'Obtain a share from Twitter'),
+    'lvl2_ch3': _lazy(u'Log in on both your phone and your desktop web browser'),
+    'lvl2_ch4': _lazy(u'Complete a face-to-face share via the QR code on your phone'),
+    # L10n: Keep the value of 100 even if 'miles' must be localized to kilometers.
+    'lvl2_ch5': _lazy(u'Share with someone new who lives over 100 miles away'),
+    'lvl2_ch6': _lazy(u'Share with someone new in a different country'),
+    'lvl2_ch7': _lazy(u'Complete 10 shares'),
+
+    # Level 3
+    'lvl3_ch1': _lazy(u'Share with someone between 6am and 10am (Local time for the recipient.)'),
+    'lvl3_ch2': _lazy(u'Share with someone via a printed flyer'),
+    'lvl3_ch3': _lazy(u'Share with someone new on a different continent'),
+    'lvl3_ch4': _lazy(u'Complete 3 shares in a single 12-hour period'),
+    'lvl3_ch5': _lazy(u'Create a chain by having someone you’ve shared with share with someone else'),
+    'lvl3_ch6': _lazy(u'Complete 20 shares'),
+
+    # Level 4
+    'lvl4_ch1': _lazy(u'Share with someone between 2am and 4am (Local time for the recipient.)'),
+    'lvl4_ch2': _lazy(u'Share your Spark to 8 different U.S. states'),
+    'lvl4_ch3': _lazy(u'Share your Spark to 5 different E.U. countries'),
+    'lvl4_ch4': _lazy(u'Complete 6 shares within a single 12-hour period'),
+    'lvl4_ch5': _lazy(u'Complete 2 or more shares in a single hour'),
+    'lvl4_ch6': _lazy(u'Complete 40 shares'),
+
+    # Super Sparker
+    'lvl5_ch1': _lazy(u'Share with 60 people'),
+    'lvl5_ch2': _lazy(u'Share with 100 people'),
+    'lvl5_ch3': _lazy(u'Share with 250 people'),
+    'lvl5_ch4': _lazy(u'Share with 500 people'),
+    'lvl5_ch5': _lazy(u'Share with 1000 people'),
+
+    # EASTER EGGS
+    'ee_ch1': _lazy(u'Non-Android user who shares with three people'),
+    'ee_ch2': _lazy(u'Non-Android user who shares with ten people'),
+    'ee_ch3': _lazy(u'Share your Spark to 3 continents'),
+    'ee_ch4': _lazy(u'Share your Spark to all 7 continents'),
+    'ee_ch5': _lazy(u'Share to Antarctica'),
+    'ee_ch6': _lazy(u'Share to Arctic Circle'),
+    'ee_ch7': _lazy(u'Share to the capital of any country'),
+    'ee_ch8': _lazy(u'Share between the US and UK'),
+    'ee_ch9': _lazy(u'Share with someone in each of the 10 different timezones'),
+    'ee_ch10': _lazy(u'Share your Spark with someone on an island (Hawaii, Japan, etc.)'),
+    'ee_ch11': _lazy(u'Share your Spark to someone in a French-speaking country'),
+    'ee_ch12': _lazy(u'Share with someone roughly on the other side of the globe'),
+    'ee_ch13': _lazy(u'Share your Spark between a North and South American city'),
+    'ee_ch14': _lazy(u'Share to a country with a desert in it'),
+    'ee_ch15': _lazy(u'Share to a friend in each of the original 13 US states'),
+    'ee_ch16': _lazy(u'Share to someone in each continental state'),
+    'ee_ch17': _lazy(u'Share with someone in each original EU country'),
+    'ee_ch18': _lazy(u'Share to or from Brazil'),
+    'ee_ch19': _lazy(u'Person with the most shares'),
+}
diff --git a/apps/challenges/levels.py b/apps/challenges/levels.py
new file mode 100644
index 0000000..98f6b92
--- /dev/null
+++ b/apps/challenges/levels.py
@@ -0,0 +1,10 @@
+from tower import ugettext_lazy as _lazy
+
+# L10n: Description of the three first levels. Example: Level 2 (Complete 4 to advance.)
+LEVEL_GENERIC = _lazy(u'Level %(level)s (Complete %(num_challenges)s to advance.)')
+
+# L10n: Description of the fourth level
+LEVEL_4 = _lazy(u'Level 4 (Complete these challenges and all previous challenges to advance.)')
+
+# L10n: Description of the Super Sparker secret level
+LEVEL_5 = _lazy(u'The Super Sparker (Appears in challenge list once level 4 is completed.)')
\ No newline at end of file
diff --git a/media/js/mobile/menu.js b/media/js/mobile/menu.js
index ef8f26c..818982d 100644
--- a/media/js/mobile/menu.js
+++ b/media/js/mobile/menu.js
@@ -16,7 +16,7 @@ var initMenu = function () {
        $('#logout-confirmation').fadeIn('fast');
     });
     
-    $('#logout-confirmation button.left-button').click(function() {
+    $('#logout-confirmation .left-button').click(function() {
         $('#logout-confirmation').fadeOut('fast');
         $('#menu-content').fadeIn('fast');
     });
diff --git a/templates/mobile/page.html b/templates/mobile/page.html
index de8a91d..b6d4645 100644
--- a/templates/mobile/page.html
+++ b/templates/mobile/page.html
@@ -30,28 +30,41 @@
 				{% if num_notifications %}
 	            <div id="notifications">{{ num_notifications }}</div>
 				{% endif %}
+				{# L10n: Name of the mobile navigation menu #}
 	            {{ _('Menu') }}
 	        </div>
-	        <ul>
-	            <li><a href="{{ url('mobile.boost') }}">{{ _('Boost your Spark') }}</a></li>
-	            <li><a href="{{ url('mobile.stats') }}">{{ _('Stats') }}</a></li>
-	            <li><a href="{{ url('mobile.challenges') }}">{{ _('Challenges') }}
-						{% if num_new_challenges %}
-						{# L10n: {n} is the number of recently completed challenges. #}
-						<span>{{ ngettext('+{n} new','+{n} new', num_new_challenges)|f(n=num_new_challenges) }}</span>
-						{% endif %}
-					</a>
-				</li>
-	            <li><a href="{{ url('mobile.badges') }}">{{ _('Badges') }}
-						{% if num_new_badges %}
-						{# L10n: {n} is the number of recently obtained badges. #}
-						<span>{{ ngettext('+{n} new','+{n} new', num_new_badges)|f(n=num_new_badges) }}</span>
-						{% endif %}
-					</a>
-				</li>
-	            <li><a href="{{ url('mobile.about') }}">{{ _('About Mozilla') }}</a></li>
-	        </ul>
-	        <a href="{{ url('users.mobile_logout') }}" id="logout">{{ _('Do you wanna log out?') }}</a>
+			<div id="menu-content">
+		        <ul>
+		            <li><a href="{{ url('mobile.boost') }}">{{ _('Boost your Spark') }}</a></li>
+		            <li><a href="{{ url('mobile.stats') }}">{{ _('Stats') }}</a></li>
+		            <li><a href="{{ url('mobile.challenges') }}">{{ _('Challenges') }}
+							{% if num_new_challenges %}
+							{# L10n: {n} is the number of recently completed challenges. #}
+							<span>{{ ngettext('+{n} new','+{n} new', num_new_challenges)|f(n=num_new_challenges) }}</span>
+							{% endif %}
+						</a>
+					</li>
+		            <li><a href="{{ url('mobile.badges') }}">{{ _('Badges') }}
+							{% if num_new_badges %}
+							{# L10n: {n} is the number of recently obtained badges. #}
+							<span>{{ ngettext('+{n} new','+{n} new', num_new_badges)|f(n=num_new_badges) }}</span>
+							{% endif %}
+						</a>
+					</li>
+		            <li><a href="{{ url('mobile.about') }}">{{ _('About Mozilla') }}</a></li>
+	        
+		        </ul>
+				<a href="#" id="logout">{{ _('Do you wanna log out?') }}</a>
+			</div>
+			<div id="logout-confirmation">
+                <p class="section sans confirmation">
+                    _('Are you sure you want to log out ?')
+                </p>
+                <div class="buttons-wrapper">
+					<div class="button left-button"><a href="#">{{ _('Cancel') }}</a></div>
+					<div class="button right-button"><a href="{{ url('users.mobile_logout') }}">{{ _('Yes') }}</a></div>
+                </div>
+            </div>
 	    </div>
 	</div> <!-- end menu wrapper -->
 	{% endif %}