diff --git a/phpBB/adm/index.php b/phpBB/adm/index.php
index c0fa2fdddb..83c4044687 100644
--- a/phpBB/adm/index.php
+++ b/phpBB/adm/index.php
@@ -28,10 +28,14 @@ $user->setup('acp/common');
 // End session management
 
 // Have they authenticated (again) as an admin for this session?
-if (!isset($user->data['session_admin']) || !$user->data['session_admin'])
+if ($user->data['user_id'] != ANONYMOUS &&  (!isset($user->data['session_admin']) || !$user->data['session_admin']))
 {
 	login_box('', $user->lang['LOGIN_ADMIN_CONFIRM'], $user->lang['LOGIN_ADMIN_SUCCESS'], true, false);
 }
+else if ($user->data['user_id'] == ANONYMOUS)
+{
+	login_box();
+}
 
 // Is user any type of admin? No, then stop here, each script needs to
 // check specific permissions but this is a catchall
@@ -108,7 +112,7 @@ function adm_page_header($page_title)
 
 	$template->assign_vars(array(
 		'PAGE_TITLE'			=> $page_title,
-		'USERNAME'				=> $user->data['username'],
+		'USERNAME'				=> ($user->data['user_id'] != ANONYMOUS) ? $user->data['username'] : '',
 
 		'SID'					=> $SID,
 		'_SID'					=> $_SID,
@@ -120,6 +124,9 @@ function adm_page_header($page_title)
 		'U_ADM_INDEX'			=> append_sid("{$phpbb_admin_path}index.$phpEx"),
 		'U_INDEX'				=> append_sid("{$phpbb_root_path}index.$phpEx"),
 
+		'S_USER_ADMIN'			=> $user->data['session_admin'],
+		'S_USER_LOGGED_IN'		=> ($user->data['user_id'] != ANONYMOUS && !$user->data['is_bot']),
+
 		'T_IMAGES_PATH'			=> "{$phpbb_root_path}images/",
 		'T_SMILIES_PATH'		=> "{$phpbb_root_path}{$config['smilies_path']}/",
 		'T_AVATAR_PATH'			=> "{$phpbb_root_path}{$config['avatar_path']}/",
diff --git a/phpBB/adm/style/acp_login.html b/phpBB/adm/style/acp_login.html
new file mode 100755
index 0000000000..015f3ec908
--- /dev/null
+++ b/phpBB/adm/style/acp_login.html
@@ -0,0 +1,46 @@
+<!-- INCLUDE overall_header.html -->
+<h1>{PAGE_TITLE}</h1>
+<p><!-- IF LOGIN_EXPLAIN -->{LOGIN_EXPLAIN}<!-- ELSE -->{L_LOGIN}<!-- ENDIF --></p>
+
+<!-- IF LOGIN_ERROR -->
+	<div class="errorbox">
+		<h3>{L_WARNING}</h3>
+		<p>{LOGIN_ERROR}</p>
+	</div>
+<!-- ENDIF -->
+<form action="{S_LOGIN_ACTION}" method="post" id="login">
+ 
+	<fieldset>
+		<dl>
+			<dt><label for="{USERNAME_CREDENTIAL}">{L_USERNAME}:</label></dt>
+			<dd><input type="text" tabindex="1" name="{USERNAME_CREDENTIAL}" id="{USERNAME_CREDENTIAL}" size="25" value="{USERNAME}" class="inputbox autowidth" /></dd>
+		</dl>
+		<dl>
+			<dt><label for="{PASSWORD_CREDENTIAL}">{L_PASSWORD}:</label></dt>
+			<dd><input type="password" tabindex="2" id="{PASSWORD_CREDENTIAL}" name="{PASSWORD_CREDENTIAL}" size="25" class="inputbox autowidth" /></dd>
+			<!-- IF S_DISPLAY_FULL_LOGIN and (U_SEND_PASSWORD or U_RESEND_ACTIVATION) -->
+				<!-- IF U_SEND_PASSWORD --><dd><a href="{U_SEND_PASSWORD}">{L_FORGOT_PASS}</a></dd><!-- ENDIF -->
+				<!-- IF U_RESEND_ACTIVATION --><dd><a href="{U_RESEND_ACTIVATION}">{L_RESEND_ACTIVATION}</a></dd><!-- ENDIF -->
+			<!-- ENDIF -->
+		</dl>
+			
+		<!-- IF S_CONFIRM_CODE -->
+		<dl>
+			<dt><label for="confirm_code">{L_CONFIRM_CODE}:</label><br /><span>{L_CONFIRM_CODE_EXPLAIN}</span></dt>
+				<dd><input type="hidden" name="confirm_id" value="{CONFIRM_ID}" />{CONFIRM_IMAGE}</dd>
+				<dd><input type="text" name="confirm_code" id="confirm_code" size="8" maxlength="8" tabindex="3" class="inputbox narrow" title="{L_CONFIRM_CODE}" /></dd>
+		</dl>
+		<!-- ENDIF -->
+	
+		<p class="submit-buttons">
+			<!-- IF S_DISPLAY_FULL_LOGIN -->
+				<!-- IF S_AUTOLOGIN_ENABLED --><label for="autologin"><input type="checkbox" name="autologin" id="autologin" tabindex="4" /> {L_LOG_ME_IN}</label><!-- ENDIF -->
+				<label for="viewonline"><input type="checkbox" name="viewonline" id="viewonline" tabindex="5" /> {L_HIDE_ME}</label>
+			<!-- ENDIF -->
+				&nbsp;
+				{S_HIDDEN_FIELDS}<input type="submit" name="login" tabindex="6" value="{L_LOGIN}" class="button1" />
+		</p>
+	</fieldset> 
+</form>
+
+<!-- INCLUDE overall_footer.html -->
diff --git a/phpBB/adm/style/overall_header.html b/phpBB/adm/style/overall_header.html
index 5294a101f9..adafc0aa6d 100644
--- a/phpBB/adm/style/overall_header.html
+++ b/phpBB/adm/style/overall_header.html
@@ -186,6 +186,7 @@ function switch_menu()
 					<!-- ENDIF -->
 					<div id="menu">
 						<p><!-- IF S_USER_LOGGED_IN --> {L_LOGGED_IN_AS}<br /><strong>{USERNAME}</strong> [&nbsp;<a href="{U_LOGOUT}">{L_LOGOUT}</a>&nbsp;]<!-- ENDIF --><!-- IF S_USER_ADMIN -->[&nbsp;<a href="{U_ADM_LOGOUT}">{L_ADM_LOGOUT}</a>&nbsp;]<!-- ENDIF --></p>
+						<!-- IF S_USER_ADMIN --> 
 						<ul>
 						<!-- BEGIN l_block1 -->
 							<!-- IF l_block1.S_SELECTED -->
@@ -203,6 +204,7 @@ function switch_menu()
 							<!-- ENDIF -->
 						<!-- END l_block1 -->
 						</ul>
+						<!-- ENDIF -->
 					</div>
 	
 					<div id="main">
diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index e0fb51610b..52e983c1e1 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -110,6 +110,7 @@
 		<li>[Change] Show email ban reason on registration. Additionally allow custom errors properly returned if using validate_data(). (Bug #26885)</li>
 		<li>[Feature] Streamlined banning via the MCP by adding a ban link to the user profile. Also pre-fills ban fields as far as possible.</li>
 		<li>[Feature] Added ACP logout to reset an admin session.</li>
+		<li>[Feature] Handle ACP logins with admin style</li>
 
 	</ul>
 
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 600506d08f..f45bfa57b3 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -2234,7 +2234,7 @@ function confirm_box($check, $title = '', $hidden = '', $html_body = 'confirm_bo
 */
 function login_box($redirect = '', $l_explain = '', $l_success = '', $admin = false, $s_display = true)
 {
-	global $db, $user, $template, $auth, $phpEx, $phpbb_root_path, $config;
+	global $db, $user, $template, $auth, $phpEx, $phpbb_root_path, $phpbb_admin_path, $config;
 
 	$err = '';
 
@@ -2243,6 +2243,16 @@ function login_box($redirect = '', $l_explain = '', $l_success = '', $admin = fa
 	{
 		$user->setup();
 	}
+	
+	if (defined('ADMIN_START'))
+	{
+		// Set custom template for admin area
+		$template->set_custom_template($phpbb_admin_path . 'style', 'admin');
+		$template->assign_var('T_TEMPLATE_PATH', $phpbb_admin_path . 'style');
+
+		// the acp template is never stored in the database
+		$user->theme['template_storedb'] = false;
+	}
 
 	// Print out error if user tries to authenticate as an administrator without having the privileges...
 	if ($admin && !$auth->acl_get('a_'))
@@ -2447,20 +2457,43 @@ function login_box($redirect = '', $l_explain = '', $l_success = '', $admin = fa
 		'S_HIDDEN_FIELDS' 		=> $s_hidden_fields,
 
 		'S_ADMIN_AUTH'			=> $admin,
+		'S_ACP_LOGIN'			=> defined('ADMIN_START'),
 		'USERNAME'				=> ($admin) ? $user->data['username'] : '',
 
 		'USERNAME_CREDENTIAL'	=> 'username',
 		'PASSWORD_CREDENTIAL'	=> ($admin) ? 'password_' . $credential : 'password',
 	));
-
-	page_header($user->lang['LOGIN'], false);
-
-	$template->set_filenames(array(
-		'body' => 'login_body.html')
-	);
+	
+	if (defined('ADMIN_START'))
+	{
+		$template->set_filenames(array(
+			'body' => 'acp_login.html')
+		);
+		$template->assign_block_vars('t_block1', array(
+			'L_TITLE'		=> $user->lang['LOGIN'],
+			'S_SELECTED'	=> true,
+			'U_TITLE'		=> '',
+		));
+		adm_page_header($user->lang['LOGIN'], false);
+	}
+	else
+	{
+		$template->set_filenames(array(
+			'body' => 'login_body.html')
+		);
+		page_header($user->lang['LOGIN'], false);
+	}
+ 
 	make_jumpbox(append_sid("{$phpbb_root_path}viewforum.$phpEx"));
-
-	page_footer();
+	if (defined('ADMIN_START') && isset($user->data['session_admin']) && $user->data['session_admin'])
+	{
+		adm_page_footer();
+	}
+	else
+	{
+		page_footer();
+	}
+	
 }
 
 /**