diff --git a/main/admin/settings.lib.php b/main/admin/settings.lib.php
index 641e9ab81d..be23973d88 100755
--- a/main/admin/settings.lib.php
+++ b/main/admin/settings.lib.php
@@ -295,7 +295,7 @@ function handle_stylesheets()
 			$dirpath = api_get_path(SYS_PATH).'main/css/'.$style_dir;
 			if (is_dir($dirpath)) {
 				if ($style_dir != '.' && $style_dir != '..') {
-					if ($currentstyle == $style_dir OR ($style_dir == 'dokeos_classic' AND !$currentstyle)) {
+					if ($currentstyle == $style_dir OR ($style_dir == 'chamilo' AND !$currentstyle)) {
 						$selected = 'selected="true"';
 					} else {
 						$selected = '';
diff --git a/main/chat/chat.php b/main/chat/chat.php
index 22c3a8e4e2..f850d870c5 100755
--- a/main/chat/chat.php
+++ b/main/chat/chat.php
@@ -26,26 +26,10 @@ header('Content-Type: text/html; charset='.api_get_system_encoding());
 /*
  * Choose CSS style (platform's, user's, or course's)
  */
-$platform_theme = api_get_setting('stylesheets'); 	// plataform's css
-$my_style = $platform_theme;
-if (api_get_setting('user_selected_theme') == 'true') {
-	$useri = api_get_user_info();
-	$user_theme = $useri['theme'];
-	if (!empty($user_theme) && $user_theme != $my_style) {
-		$my_style = $user_theme;					// user's css
-	}
-}
+$my_style = api_get_visual_theme();
 
 $mycourseid = api_get_course_id();
 if (!empty($mycourseid) && $mycourseid != -1) {
-	if (api_get_setting('allow_course_theme') == 'true') {
-		$mycoursetheme = api_get_course_setting('course_theme');
-		if (!empty($mycoursetheme) && $mycoursetheme != -1) {
-			if (!empty($mycoursetheme) && $mycoursetheme != $my_style) {
-				$my_style = $mycoursetheme;			// course's css
-			}
-		}
-	}
 	$open_chat_window = api_get_course_setting('allow_open_chat_window');
 }
 
@@ -102,9 +86,8 @@ if ($_SESSION['_gid'] OR $_GET['group_id']) {
 
 
 if (empty($open_chat_window)) {
-Display::display_header($tool_name, 'Chat');
+	Display::display_header($tool_name, 'Chat');
 }
-	
 
 echo '<iframe src="chat_whoisonline.php?cidReq='.$cidreq.'" name="chat_whoisonline" scrolling="auto" style="height:320px; width:19%; border: 0px none; float:left"></iframe>';
 echo '<iframe src="chat_chat.php?origin='.Security::remove_XSS($_GET['origin']).'&target='.Security::remove_XSS($_GET['target']).'&amp;cidReq='.$cidreq.'" name="chat_chat" scrolling="auto" height="240" style="width:80%; border: 0px none; float:right"></iframe>';
@@ -112,7 +95,7 @@ echo '<iframe src="chat_message.php?cidReq='.$cidreq.'" name="chat_message" scro
 echo '<iframe src="chat_hidden.php?cidReq='.$cidreq.'" name="chat_hidden" height="0" style="border: 0px none"></iframe>';
 
 if (empty($open_chat_window)) {
-Display::display_footer();
+	Display::display_footer();
 }
 
 echo '</html>';
diff --git a/main/chat/header_frame.inc.php b/main/chat/header_frame.inc.php
old mode 100644
new mode 100755
index 95032fede2..1382bc8a71
--- a/main/chat/header_frame.inc.php
+++ b/main/chat/header_frame.inc.php
@@ -25,29 +25,7 @@ if (FRAME == 'hidden') {
 /*
  * Choose CSS style (platform's, user's, or course's)
  */
-
-$platform_theme = api_get_setting('stylesheets'); 	// plataform's css
-$my_style = $platform_theme;
-if (api_get_setting('user_selected_theme') == 'true') {
-	$useri = api_get_user_info();
-	$user_theme = $useri['theme'];
-	if (!empty($user_theme) && $user_theme != $my_style) {
-		$my_style = $user_theme;					// user's css
-	}
-}
-
-$mycourseid = api_get_course_id();
-
-if (!empty($mycourseid) && $mycourseid != -1) {
-	if (api_get_setting('allow_course_theme') == 'true') {
-		$mycoursetheme = api_get_course_setting('course_theme');
-		if (!empty($mycoursetheme) && $mycoursetheme != -1) {
-			if (!empty($mycoursetheme) && $mycoursetheme != $my_style) {
-				$my_style = $mycoursetheme;			// course's css
-			}
-		}
-	}
-}
+$my_style = api_get_visual_theme();
 
 if (empty($mycourseid)) {
 	// If it is not set $mycourse id we reload the chat_message window in order to hide the textarea to submit a message.
diff --git a/main/document/footerpage.php b/main/document/footerpage.php
index 82c0f74b34..5ea43ab0e2 100755
--- a/main/document/footerpage.php
+++ b/main/document/footerpage.php
@@ -8,44 +8,7 @@
 
 require_once '../inc/global.inc.php';
 
-$platform_theme = api_get_setting('stylesheets'); 	// plataform's css
-$my_style = $platform_theme;
-
-if (api_get_setting('user_selected_theme') == 'true') {
-	$useri = api_get_user_info();
-	$user_theme = $useri['theme'];
-	if (!empty($user_theme) && $user_theme != $my_style) {
-		$my_style = $user_theme;					// user's css
-	}
-}
-$mycourseid = api_get_course_id();
-if (!empty($mycourseid) && $mycourseid != -1) {
-	if (api_get_setting('allow_course_theme') == 'true') {
-		$mycoursetheme=api_get_course_setting('course_theme');
-
-		if (!empty($mycoursetheme) && $mycoursetheme != -1) {
-			if (!empty($mycoursetheme) && $mycoursetheme != $my_style) {
-				$my_style = $mycoursetheme;			// course's css
-			}
-		}
-
-		$mycourselptheme = api_get_course_setting('allow_learning_path_theme');
-		if (!empty($mycourselptheme) && $mycourselptheme != -1 && $mycourselptheme == 1) {
-
-			global $lp_theme_css; //  it comes from the lp_controller.php
-			global $lp_theme_config; // it comes from the lp_controller.php
-
-			if (!$lp_theme_config) {
-				if ($lp_theme_css != '') {
-					$theme = $lp_theme_css;
-					if (!empty($theme) && $theme != $my_style) {
-						$my_style = $theme;	 // LP's css
-					}
-				}
-			}
-		}
-	}
-}
+$my_style = api_get_visual_theme();
 
 ?><!DOCTYPE html
      PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
diff --git a/main/help/help.php b/main/help/help.php
index 63b8a538f7..9073711fd5 100755
--- a/main/help/help.php
+++ b/main/help/help.php
@@ -20,44 +20,7 @@ header('Content-Type: text/html; charset='. api_get_system_encoding());
  * Choose CSS style platform's, user's, course's, or Learning path CSS
  */
 
-$platform_theme = api_get_setting('stylesheets'); 	// plataform's css
-$my_style = $platform_theme;
-if (api_get_setting('user_selected_theme') == 'true') {
-	$useri = api_get_user_info();
-	$user_theme = $useri['theme'];
-	if (!empty($user_theme) && $user_theme != $my_style) {
-		$my_style = $user_theme;					// user's css
-	}
-}
-$mycourseid = api_get_course_id();
-if (!empty($mycourseid) && $mycourseid != -1) {
-	if (api_get_setting('allow_course_theme') == 'true') {
-		$mycoursetheme = api_get_course_setting('course_theme');
-		if (!empty($mycoursetheme) && $mycoursetheme != -1) {
-			if(!empty($mycoursetheme) && $mycoursetheme != $my_style) {
-				$my_style = $mycoursetheme;			// course's css
-			}
-		}
-
-		$mycourselptheme = api_get_course_setting('allow_learning_path_theme');
-		if (!empty($mycourselptheme) && $mycourselptheme != -1 && $mycourselptheme == 1) {
-			global $lp_theme_css; //  it comes from the lp_controller.php
-			global $lp_theme_config; // it comes from the lp_controller.php
-
-			if (!empty($lp_theme_css)) {
-				$theme = $lp_theme_css;
-				if (!empty($theme) && $theme != $my_style) {
-					$my_style = $theme;	 // LP's css
-				}
-			}
-
-		}
-	}
-}
-
-if ($lp_theme_log) {
-	$my_style = $platform_theme;
-}
+$my_style = api_get_visual_theme();
 
 ?>
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
diff --git a/main/inc/header.inc.php b/main/inc/header.inc.php
index eca9d8f2a0..c2b7a7b4ea 100755
--- a/main/inc/header.inc.php
+++ b/main/inc/header.inc.php
@@ -12,7 +12,7 @@
 /*
  * HTTP HEADER
  */
- 
+
 // Server mode indicator.
 if (api_is_platform_admin()) {
 	if (api_get_setting('server_type') == 'test') {
@@ -69,44 +69,8 @@ echo api_get_setting('siteName');
 /*<![CDATA[*/
 <?php
 
-$platform_theme = api_get_setting('stylesheets'); 	// plataform's css
-$my_style = $platform_theme;
-
-if (api_get_setting('user_selected_theme') == 'true') {
-	$useri = api_get_user_info();
-	$user_theme = $useri['theme'];
-	if (!empty($user_theme) && $user_theme != $my_style) {
-		$my_style = $user_theme;					// user's css
-	}
-}
-$mycourseid = api_get_course_id();
-if (!empty($mycourseid) && $mycourseid != -1) {
-	if (api_get_setting('allow_course_theme') == 'true') {
-		$mycoursetheme=api_get_course_setting('course_theme');
-
-		if (!empty($mycoursetheme) && $mycoursetheme != -1) {
-			if (!empty($mycoursetheme) && $mycoursetheme != $my_style) {
-				$my_style = $mycoursetheme;			// course's css
-			}
-		}
-
-		$mycourselptheme = api_get_course_setting('allow_learning_path_theme');
-		if (!empty($mycourselptheme) && $mycourselptheme != -1 && $mycourselptheme == 1) {
-
-			global $lp_theme_css; //  it comes from the lp_controller.php
-			global $lp_theme_config; // it comes from the lp_controller.php
-
-			if (!$lp_theme_config) {
-				if ($lp_theme_css != '') {
-					$theme = $lp_theme_css;
-					if (!empty($theme) && $theme != $my_style) {
-						$my_style = $theme;	 // LP's css
-					}
-				}
-			}
-		}
-	}
-}
+$platform_theme = api_get_setting('stylesheets');
+$my_style = api_get_visual_theme();
 
 global $show_learn_path;
 
@@ -116,9 +80,6 @@ if ($show_learn_path) {
 	$htmlHeadXtra[] = '<script src="dtree.js" type="text/javascript"></script>'; //will be moved
 }
 
-if (empty($my_style)) {
-	$my_style = 'dokeos_classic';
-}
 echo '@import "'.api_get_path(WEB_CSS_PATH).$my_style.'/default.css";'."\n";
 echo '@import "'.api_get_path(WEB_CSS_PATH).$my_style.'/course.css";'."\n";
 
diff --git a/main/inc/lib/main_api.lib.php b/main/inc/lib/main_api.lib.php
index b827a9d488..7625ba7a2f 100755
--- a/main/inc/lib/main_api.lib.php
+++ b/main/inc/lib/main_api.lib.php
@@ -2646,6 +2646,64 @@ function api_get_language_id($language) {
 	return $row['id'];
 }
 
+/**
+ * Returns the name of the visual theme to be applied on the current page.
+ * The rethurned name depends on platform, course or user -wide settings.
+ * @return string	The visual theme's name, it is the name of a folder inside .../chamilo/main/css/
+ */
+function api_get_visual_theme() {
+
+	static $visual_theme;
+
+	if (!isset($visual_theme)) {
+
+		$platform_theme = api_get_setting('stylesheets'); 	// Plataform's theme.
+		$visual_theme = $platform_theme;
+
+		if (api_get_setting('user_selected_theme') == 'true') {
+			$user_info = api_get_user_info();
+			$user_theme = $user_info['theme'];
+			if (!empty($user_theme)) {
+				$visual_theme = $user_theme;				// User's theme.
+			}
+		}
+
+		$course_id = api_get_course_id();
+		if (!empty($course_id) && $course_id != -1) {
+			if (api_get_setting('allow_course_theme') == 'true') {
+				$course_theme = api_get_course_setting('course_theme');
+
+				if (!empty($course_theme) && $course_theme != -1) {
+					if (!empty($course_theme)) {
+						$visual_theme = $course_theme;		// Course's theme.
+					}
+				}
+
+				$allow_lp_theme = api_get_course_setting('allow_learning_path_theme');
+				if ($allow_lp_theme == 1) {
+					global $lp_theme_css, $lp_theme_config;	// These variables come from the file lp_controller.php.
+					if (!$lp_theme_config) {
+						if (!empty($lp_theme_css)) {
+							$visual_theme = $lp_theme_css;	// LP's theme.
+						}
+					}
+				}
+			}
+		}
+
+		if (empty($visual_theme)) {
+			$visual_theme = 'chamilo';
+		}
+
+		global $lp_theme_log;
+		if ($lp_theme_log) {
+			$visual_theme = $platform_theme;
+		}
+	}
+
+	return $visual_theme;
+}
+
 /**
  * Returns a list of CSS themes currently available in the CSS folder
  * @return	array	List of themes directories from the css folder
diff --git a/main/inc/reduced_header.inc.php b/main/inc/reduced_header.inc.php
index 39c1919a89..b69bc5dd20 100755
--- a/main/inc/reduced_header.inc.php
+++ b/main/inc/reduced_header.inc.php
@@ -53,45 +53,8 @@ echo api_get_setting('siteName');
  * Choose CSS style platform's, user's, course's, or Learning path CSS
  */
 
-$platform_theme = api_get_setting('stylesheets'); 	// plataform's css
-$my_style = $platform_theme;
-if (api_get_setting('user_selected_theme') == 'true') {
-	$useri = api_get_user_info();
-	$user_theme = $useri['theme'];
-	if (!empty($user_theme) && $user_theme != $my_style) {
-		$my_style = $user_theme;					// user's css
-	}
-}
-$mycourseid = api_get_course_id();
-if (!empty($mycourseid) && $mycourseid != -1) {
-	if (api_get_setting('allow_course_theme') == 'true') {
-		$mycoursetheme=api_get_course_setting('course_theme');
-		if (!empty($mycoursetheme) && $mycoursetheme != -1) {
-			if (!empty($mycoursetheme) && $mycoursetheme != $my_style) {
-				$my_style = $mycoursetheme;		// course's css
-			}
-		}
-
-		$mycourselptheme=api_get_course_setting('allow_learning_path_theme');
-		if (!empty($mycourselptheme) && $mycourselptheme != -1 && $mycourselptheme == 1) {
-			global $lp_theme_css; //  it comes from the lp_controller.php
-			global $lp_theme_config; // it comes from the lp_controller.php
-
-			if (!empty($lp_theme_css))
-				{
-					$theme=$lp_theme_css;
-					if (!empty($theme) && $theme != $my_style) {
-						$my_style = $theme;	 // LP's css
-					}
-				}
-
-		}
-	}
-}
-
-if (!empty($lp_theme_log)) {
-	$my_style = $platform_theme;
-}
+$platform_theme = api_get_setting('stylesheets');
+$my_style = api_get_visual_theme();
 
 // Sets the css reference it is call from lp_nav.php, lp_toc.php, lp_message, lp_log.php
 if (!empty($scorm_css_header)) {
diff --git a/main/install/index.php b/main/install/index.php
index a22bda17a6..2dd1218246 100755
--- a/main/install/index.php
+++ b/main/install/index.php
@@ -51,7 +51,8 @@ $_setting = array(
 	'platform_charset' => 'UTF-8',
 	'server_type' => 'production', // 'production' | 'test'
 	'permissions_for_new_directories' => '0770',
-	'permissions_for_new_files' => '0660'
+	'permissions_for_new_files' => '0660',
+	'stylesheets' => 'chamilo'
 );
 
 // Determination of the language during the installation procedure.
@@ -306,7 +307,7 @@ if ($encryptPassForm == '1') {
 	<title>&mdash; <?php echo get_lang('ChamiloInstallation').' &mdash; '.get_lang('Version_').' '.$new_version; ?></title>
 	<style type="text/css" media="screen, projection">
 		/*<![CDATA[*/
-		@import "../css/chamilo/default.css";
+		@import "../css/<?php echo api_get_visual_theme(); ?>/default.css";
 		/*]]>*/
 	</style>
 	<script type="text/javascript" src="../inc/lib/javascript/jquery.js"></script>
diff --git a/main/newscorm/openoffice_text.class.php b/main/newscorm/openoffice_text.class.php
index 326126a34b..7d29dc0734 100755
--- a/main/newscorm/openoffice_text.class.php
+++ b/main/newscorm/openoffice_text.class.php
@@ -76,7 +76,7 @@ class OpenofficeText extends OpenofficeDocument {
 
 		// dokeos styles
 		$my_style = api_get_setting('stylesheets');
-		if(empty($my_style)){$my_style = 'dokeos_classic';}
+		if(empty($my_style)){$my_style = 'chamilo';}
 		$style_to_import = "<style type=\"text/css\">\r\n";
 		$style_to_import .= '@import "'.api_get_path(WEB_CODE_PATH).'css/'.$my_style.'/default.css";'."\n";
 		$style_to_import .= '@import "'.api_get_path(WEB_CODE_PATH).'css/'.$my_style.'/course.css";'."\n";
diff --git a/main/newscorm/openoffice_text_document.class.php b/main/newscorm/openoffice_text_document.class.php
index ce90776bb9..4cb10a45ed 100755
--- a/main/newscorm/openoffice_text_document.class.php
+++ b/main/newscorm/openoffice_text_document.class.php
@@ -73,7 +73,7 @@ class OpenOfficeTextDocument extends OpenofficeDocument {
 
 		// dokeos styles
 		$my_style = api_get_setting('stylesheets');
-		if(empty($my_style)){$my_style = 'dokeos_classic';}
+		if(empty($my_style)){$my_style = 'chamilo';}
 		$style_to_import = "<style type=\"text/css\">\r\n";
 		$style_to_import .= '@import "'.api_get_path(WEB_CODE_PATH).'css/'.$my_style.'/default.css";'."\n";
 		$style_to_import .= '@import "'.api_get_path(WEB_CODE_PATH).'css/'.$my_style.'/course.css";'."\n";