diff --git a/code/DocumentationParser.php b/code/DocumentationParser.php
index 1ae3291..b897277 100755
--- a/code/DocumentationParser.php
+++ b/code/DocumentationParser.php
@@ -270,6 +270,9 @@ class DocumentationParser {
 		$relativePath = dirname($page->getRelativePath());
 		if($relativePath == '.') $relativePath = '';
 		
+		// file base link
+		$fileBaseLink = Director::makeRelative(dirname($page->getPath()));
+		
 		if($matches) {
 			foreach($matches[0] as $i => $match) {
 				$title = $matches[2][$i];
@@ -282,15 +285,25 @@ class DocumentationParser {
 				$urlParts = parse_url($url);
 				if($urlParts && isset($urlParts['scheme'])) continue;
 
-				// Rewrite URL
-				if(preg_match('/^\//', $url)) {
-					// Absolute: Only path to module base
-					$relativeUrl = Controller::join_links($baselink, $url);
-				} else {
-					// Relative: Include path to module base and any folders
-					$relativeUrl = Controller::join_links($baselink, $relativePath, $url);
+				// for images we need to use the file base path
+				if(preg_match('/_images/', $url)) {
+					$relativeUrl = Controller::join_links(
+						Director::absoluteBaseURL(),
+						$fileBaseLink,
+						$url
+					);
 				}
-			
+				else {
+					// Rewrite public URL
+					if(preg_match('/^\//', $url)) {
+						// Absolute: Only path to module base
+						$relativeUrl = Controller::join_links($baselink, $url);
+					} else {
+						// Relative: Include path to module base and any folders
+						$relativeUrl = Controller::join_links($baselink, $relativePath, $url);
+					}
+				}
+				
 				// Resolve relative paths
 				while(strpos($relativeUrl, '..') !== FALSE) {
 					$relativeUrl = preg_replace('/\w+\/\.\.\//', '', $relativeUrl);
diff --git a/code/DocumentationService.php b/code/DocumentationService.php
index f4cc5ff..233d5a2 100755
--- a/code/DocumentationService.php
+++ b/code/DocumentationService.php
@@ -36,7 +36,7 @@ class DocumentationService {
 	 *
 	 * @var array
 	 */
-	public static $valid_markdown_extensions = array('.md', '.txt', '.markdown');
+	public static $valid_markdown_extensions = array('md', 'txt', 'markdown');
 	
 	/**
 	 * Registered {@link DocumentationEntity} objects to include in the documentation. 
@@ -78,6 +78,16 @@ class DocumentationService {
 		return self::$valid_markdown_extensions;
 	}
 	
+	/**
+	 * Check to see if a given extension is a valid extension to be rendered.
+	 * Assumes that $ext has a leading dot as that is what $valid_extension uses.
+	 *
+	 * @return bool
+	 */
+	public static function is_valid_extension($ext) {
+		return in_array(strtolower($ext), self::get_valid_extensions());
+	}
+	
 	/**
 	 * Set the ignored files list
 	 *
@@ -313,35 +323,27 @@ class DocumentationService {
 	private static function find_page_recursive($base, $goal) {
 		$handle = opendir($base);
 
-		$name = strtolower(array_shift($goal));
+		$name = self::trim_extension_off(strtolower(array_shift($goal)));
 		if(!$name || $name == '/') $name = 'index';
 
-		if($handle) {
-			$extensions = DocumentationService::get_valid_extensions();
 
+		if($handle) {
+			$ignored = self::get_ignored_files();
+			
 			// ensure we end with a slash
 			$base = rtrim($base, '/') .'/';
 			
 			while (false !== ($file = readdir($handle))) {
-				if(in_array($file, DocumentationService::get_valid_extensions())) continue;
+				if(in_array($file, $ignored)) continue;
 				
-				$formatted = strtolower($file);
-				
-				// if the name has a . then take the substr 
-				$formatted = ($pos = strrpos($formatted, '.')) ? substr($formatted, 0, $pos) : $formatted;
-
-				if($dot = strrpos($name, '.')) {
-					if(in_array(substr($name, $dot), self::get_valid_extensions())) {
-						$name = substr($name, 0, $dot);
-					}
-				}
+				$formatted = self::trim_extension_off(strtolower($file));
 				
 				// the folder is the one that we are looking for.
 				if(strtolower($name) == strtolower($formatted)) {
 					
 					// if this file is a directory we could be displaying that
 					// or simply moving towards the goal.
-					if(is_dir($base . $file)) {
+					if(is_dir(Controller::join_links($base, $file))) {
 						
 						$base = $base . trim($file, '/') .'/';
 						
@@ -402,30 +404,36 @@ class DocumentationService {
 	}
 	
 	/**
-	 * Helper function to strip the extension off.
-	 * Warning: Doesn't work if the filename includes dots,
-	 * but no extension, e.g. "2.4.0-alpha" will return "2.4".
+	 * Helper function to strip the extension off and return the name without
+	 * the extension. If you need the extension see {@link get_extension()}
 	 *
 	 * @param string
 	 *
 	 * @return string
 	 */
 	public static function trim_extension_off($name) {
-		$hasExtension = strrpos($name, '.');
+		$ext = self::get_extension($name);
 
-		if($hasExtension !== false && $hasExtension > 0) {
-			$shorted = substr($name, $hasExtension);
-			
-			// can remove the extension only if we know how
-			// to read it again
-			if(in_array(rtrim($shorted, '/'), self::get_valid_extensions())) {
-				$name = substr($name, 0, $hasExtension);
+		if($ext) {
+			if(self::is_valid_extension($ext)) {
+				return substr($name, 0, strrpos($name,'.'));
 			}
 		}
 		
 		return $name;
 	}
 	
+	/**
+	 * Returns the extension from a string. If you want to trim the extension
+	 * off the end of the string see {@link trim_extension_off()}
+	 *
+	 * @param string
+	 * 
+	 * @return string
+	 */
+	public static function get_extension($name) {
+		return substr(strrchr($name,'.'), 1);
+	}
 	
 	/**
 	 * Return the children from a given entity sorted by Title using natural ordering. 
@@ -499,7 +507,6 @@ class DocumentationService {
 		$handle = opendir($folder);
 
 		if($handle) {
-			$extensions = self::get_valid_extensions();
 			$ignore = self::get_ignored_files();
 			$files = array();
 			
@@ -510,11 +517,13 @@ class DocumentationService {
 					$relativeFilePath = Controller::join_links($relative, $file);
 
 					if(is_dir($path)) {
+						// dir
 						$pages[] = $relativeFilePath;
 						
 						if($recusive) self::get_pages_from_folder_recursive($base, $relativeFilePath, $recusive, $pages);
 					} 
-					else if(in_array(substr($file, (strrpos($file, '.'))), $extensions)) {
+					else if(self::is_valid_extension(self::get_extension($path))) {
+						// file we want
 						$pages[] = $relativeFilePath;
 					}
 				}
diff --git a/code/controllers/DocumentationViewer.php b/code/controllers/DocumentationViewer.php
index ed1a59a..696127c 100755
--- a/code/controllers/DocumentationViewer.php
+++ b/code/controllers/DocumentationViewer.php
@@ -141,7 +141,9 @@ class DocumentationViewer extends Controller {
 		
 		if($firstParam) {
 			// allow assets
-			if($firstParam == "assets") return parent::handleRequest($request);
+			if($firstParam == "assets") {
+				return parent::handleRequest($request);
+			}
 			
 			// check for permalinks
 			if($link = DocumentationPermalinks::map($firstParam)) {
@@ -329,9 +331,6 @@ class DocumentationViewer extends Controller {
 	 * @return DataObject
 	 */ 
 	function getEntities($version = false, $lang = false) {
-		if(!$version) $version = $this->getVersion();
-		if(!$lang) $lang = $this->getLang();
-		
 		$entities = DocumentationService::get_registered_entities($version, $lang);
 		$output = new DataObjectSet();
 		
@@ -342,7 +341,7 @@ class DocumentationViewer extends Controller {
 				$mode = ($entity === $currentEntity) ? 'current' : 'link';
 				$folder = $entity->getFolder();
 				
-				$link = $this->Link(array_slice($this->Remaining, -1, -1), $folder, $version, $lang);
+				$link = $this->Link(array(), $folder, false, $lang);
 				
 				$content = false;
 				if($page = $entity->getIndexPage($version, $lang)) {
@@ -602,6 +601,8 @@ class DocumentationViewer extends Controller {
 		
 		if($pages) {
 			$path = array();
+			$version = $this->getVersion();
+			$lang = $this->getLang();
 			
 			foreach($pages as $i => $title) {
 				if($title) {
@@ -610,7 +611,7 @@ class DocumentationViewer extends Controller {
 					
 					$output->push(new ArrayData(array(
 						'Title' => DocumentationService::clean_page_name($title),
-						'Link' => rtrim($this->Link($path), "/"). "/"
+						'Link' => rtrim($this->Link($path, false, $version, $lang), "/"). "/"
 					)));
 				}
 			}
@@ -651,7 +652,9 @@ class DocumentationViewer extends Controller {
 	public function Link($path = false, $entity = false, $version = false, $lang = false) {
 		$base = Director::absoluteBaseURL();
 		
-		$version = (!$version) ? $this->getVersion() : $version;
+		// only include the version. Version is optional after all
+		$version = ($version === null) ? $this->getVersion() : $version;
+		
 		$lang = (!$lang) ? $this->getLang() : $lang;
 		
 		$entity = (!$entity && $this->entity) ? $this->entity : $entity;
diff --git a/code/models/DocumentationPage.php b/code/models/DocumentationPage.php
index 0160f4e..2a53602 100755
--- a/code/models/DocumentationPage.php
+++ b/code/models/DocumentationPage.php
@@ -66,6 +66,13 @@ class DocumentationPage extends ViewableData {
 		$this->relativePath = $path;
 	}
 	
+	/**
+	 * @return string
+	 */
+	function getExtension() {
+		return DocumentationService::get_extension($this->getRelativePath());
+	}
+	
 	/**
 	 * Absolute path including version and lang folder.
 	 * 
@@ -209,17 +216,23 @@ class DocumentationPage extends ViewableData {
 	}
 
 	/**
-	 * Return the raw markdown for a given documentation page
+	 * Return the raw markdown for a given documentation page. Will throw
+	 * an error if the path isn't a file.
 	 *
-	 * @throws InvalidArgumentException
-	 * @return String
+	 * Will return empty if the type is not readable
+	 *
+	 * @return string
 	 */
 	function getMarkdown() {
 		try {
 			$path = $this->getPath(true);
 
 			if($path) {
-				return file_get_contents($path);
+				$ext = $this->getExtension();
+				
+				if(DocumentationService::is_valid_extension($ext)) {
+					return file_get_contents($path);			
+				}
 			}
 		}
 		catch(InvalidArgumentException $e) {}
diff --git a/docs/en/Configuration-Options.md b/docs/en/Configuration-Options.md
index 90fff28..89aaf64 100755
--- a/docs/en/Configuration-Options.md
+++ b/docs/en/Configuration-Options.md
@@ -1,33 +1,56 @@
-# Helpful Configuration Options
+# Configuration Options
 
-	DocumentationService::set_ignored_files(array());
+## Registering what to document
 	
-If you want to ignore (hide) certain file types from being included.
+By default the documentation system will parse all the directories in your project 
+and include the documentation. If you want to only specify a few folders you can 
+disable it and register your paths manually
 
+	:::php
+	// turns off automatic parsing of filesystem
 	DocumentationService::set_automatic_registration(false);
 	
-By default the documentation system will parse all the directories in your project and
-include the documentation. If you want to only specify a few folders you can disable it
-with the above.
-
-	DocumentationService::register($module, $path, $version = 'current', $lang = 'en', $major_release = false)
-
-Registers a module to be included in the system (if automatic registration is off or you need
-to load a module outside a documentation path).
-
-	DocumentationService::unregister($module, $version = false, $lang = false)
+	// registers module 'sapphire'
+	try {	
+		DocumentationService::register("sapphire", BASE_PATH ."/sapphire/docs/", 'trunk');
+		
+	} catch(InvalidArgumentException $e) {
+		
+	} 
+		
 	
-Unregister a module (removes from documentation list). You can specify the module, the version
-and the lang. If no version is specified then all folders of that lang are removed. If you do
-not specify a version or lang the whole module will be removed from the documentation.
+If you only want to disable documentation for one module you can correspondingly 
+call unregister()
+
+	:::php
+	DocumentationService::unregister($module, $version = false, $lang = false)
+
+Unregister a module. You can specify the module, the version and the lang. If 
+no version is specified then all folders of that lang are removed. If you do 
+not specify a version or lang the whole module will be removed from the 
+documentation.
+
+
+## Hiding files from listing
+
+If you want to ignore (hide) certain file types from being included in the 
+listings. By default this is the list of hidden files
+
+	:::php
+	$files = array(
+		'.', '..', '.DS_Store', '.svn', '.git', 'assets', 'themes', '_images'
+	);
+	
+	DocumentationService::set_ignored_files($files);
 
 ## Permalinks 
 
-You can set short names for longer urls so they are easier to remember. Set the following in your mysite/_config.php file:
+Permalinks can be setup to make nicer urls or to help redirect older urls
+to new structures.
 
 	DocumentationPermalinks::add(array(
-		'debugging' => 'current/en/sapphire/topics/debugging',
-		'templates' => 'current/en/sapphire/topics/templates'
+		'debugging' => 'sapphire/en/topics/debugging',
+		'templates' => 'sapphire/en/topics/templates'
 	));
 	
 	
diff --git a/docs/en/Writing-Documentation.md b/docs/en/Writing-Documentation.md
index 3d5ec60..21e2acb 100755
--- a/docs/en/Writing-Documentation.md
+++ b/docs/en/Writing-Documentation.md
@@ -1,32 +1,67 @@
-# Writing Documentation #
+# Writing Documentation
 
-Your documentation needs to go in the specific modules docs folder which it refers mostly too. For example if you want to document
-a feature of your custom module 'MyModule' you need to create markdown files in mymodule/docs/.
+Your documentation needs to go in the specific modules docs folder which it 
+refers mostly too. For example if you want to document a feature of your 
+custom module 'mymodule' you need to create markdown files in mymodule/docs/en/.
 
-The files have to end with the __.md__ extension. The documentation viewer will automatically replace hyphens (-) with spaces (since you cannot
-have spaces web / file systems).
+The files have to end with the __.md__ extension. The documentation viewer will 
+automatically replace hyphens (-) with spaces.
 
-Also docs folder should be localized. Even if you do not plan on using multiple languages you should at least write your documentation
-in a 'en' subfolder
+	my-documentation-file.md
+	
+Translates to:
+
+	My documentation file
+	
+The module also support number prefixing for specifying the order of pages in
+the index pages and navigation trees.
+
+	03-foo.md
+	1-bar.md
+	4-baz.md
+	
+Will be output as the following in the listing views.
+
+	Bar
+	Foo
+	Baz
+
+## Localization
+
+All documentation folder should be localized. Even if you do not plan on supporting 
+multiple languages you need to write your documentation in a 'en' subfolder
 
 	/module/docs/en/
+	
 
-## Syntax ##
+## Syntax
 
-This uses a customized markdown extra parser. To view the syntax for page formatting check out [Daring Fireball](http://daringfireball.net/projects/markdown/syntax)
+Documentation should be written in markdown with an `.md` extension attached.
+To view the syntax for page formatting check out [Daring Fireball](http://daringfireball.net/projects/markdown/syntax).
 
-## Creating Hierarchy ##
+To see how to use the documentation from examples, I recommend opening up this 
+file in your text editor and playing around. As these files are plain text, any
+text editor will be able to open and write markdown files.
+
+
+## Creating Hierarchy
+
+The document viewer supports a hierarchical folder structure so you can categorize 
+documentation and create topics.
+
+## Directory Listing
+
+Each folder you create should also contain a __index.md__ file which contains 
+an overview of the module and related links. If no index is available, the 
+default behaviour is to display an ordered list of links.
+
+## Table of Contents
+
+The table of contents on each module page is generated based on where and what 
+headers you use. 
 
-The document viewer supports folder structure. There is a 9 folder limit on depth / number of sub categories you can create. 
-Each level deep it will generate the nested urls.
  
-## Directory Listing ##
+## Images and Files
 
-Each folder you create should also contain a __index.md__ file (see sapphiredocs/doc/en/index.md) which contains an overview of the
-module and related links.
-
-## Table of Contents ##
-
-The table of contents on each module page is generated 
-
- 
\ No newline at end of file
+If you want to attach images and other assets to a page you need to bundle those
+in a directory called _images at the same level as your documentation.
\ No newline at end of file
diff --git a/templates/Includes/DocInThisModule.ss b/templates/Includes/DocInThisModule.ss
index 4508d66..4167d3c 100755
--- a/templates/Includes/DocInThisModule.ss
+++ b/templates/Includes/DocInThisModule.ss
@@ -1,23 +1,26 @@
-<div id="sibling-pages" class="sidebar-box">
-	<ul>
-		<% control EntityPages %>
-			<li>
-				<a href="$Link" class="$LinkingMode">$Title</a>
-				<% if Children %>
-					<ul>
-						<% control Children %>
-							<li><a href="$Link" class="$LinkingMode">$Title</a>
-							<% if Children %>
-							<ul>
-								<% control Children %>
-								<li><a href="$Link" class="$LinkingMode">$Title</a></li>
-								<% end_control %>
-							</ul><% end_if %>
-							</li>
-						<% end_control %>
-					</ul>
-				<% end_if %>
-			</li>
-		<% end_control %>
-	</ul>
-</div>
\ No newline at end of file
+<% if EntityPages %>
+	<div id="sibling-pages" class="sidebar-box">
+		<h4>In this module:</h4>
+		<ul>
+			<% control EntityPages %>
+				<li>
+					<a href="$Link" class="$LinkingMode">$Title</a>
+					<% if Children %>
+						<ul>
+							<% control Children %>
+								<li><a href="$Link" class="$LinkingMode">$Title</a>
+								<% if Children %>
+								<ul>
+									<% control Children %>
+									<li><a href="$Link" class="$LinkingMode">$Title</a></li>
+									<% end_control %>
+								</ul><% end_if %>
+								</li>
+							<% end_control %>
+						</ul>
+					<% end_if %>
+				</li>
+			<% end_control %>
+		</ul>
+	</div>
+<% end_if %>
\ No newline at end of file
diff --git a/tests/DocumentationParserTest.php b/tests/DocumentationParserTest.php
index 31dc735..c7d9707 100755
--- a/tests/DocumentationParserTest.php
+++ b/tests/DocumentationParserTest.php
@@ -237,4 +237,24 @@ HTML;
 			$parsed
 		);
 	}
+	
+	function testRewritingRelativeLinksToFiles() {
+		$folder = '/sapphiredocs/tests/docs-parser/';
+		
+		$page = new DocumentationPage();
+		$page->setRelativePath('file-download.md');
+		$page->setEntity(new DocumentationEntity('parser', '2.4', BASE_PATH . $folder));
+		
+		$parsed = DocumentationParser::parse($page, $folder);
+		
+		$this->assertContains(
+			Controller::join_links($folder, '/en/_images/external_link.png'),
+			$parsed
+		);
+		
+		$this->assertContains(
+			Controller::join_links($folder, '/en/_images/test.tar.gz'),
+			$parsed
+		);
+	}
 }
\ No newline at end of file
diff --git a/tests/DocumentationServiceTest.php b/tests/DocumentationServiceTest.php
index 9726b6e..c270f61 100755
--- a/tests/DocumentationServiceTest.php
+++ b/tests/DocumentationServiceTest.php
@@ -11,7 +11,6 @@ class DocumentationServiceTest extends SapphireTest {
 		$entity = DocumentationService::register('testdocs', BASE_PATH . '/sapphiredocs/tests/docs/');
 		$pages = DocumentationService::get_pages_from_folder($entity);
 		
-		// check folders and files exist as their filenames
 		$this->assertContains('index.md', $pages->column('Filename'), 'The tests/docs/en folder should contain a index file');
 		$this->assertContains('subfolder/', $pages->column('Filename'), 'The tests/docs/en folder should contain a subfolder called subfolder');
 		$this->assertContains('test.md', $pages->column('Filename'), 'The tests/docs/en folder should contain a test file');
@@ -96,4 +95,18 @@ class DocumentationServiceTest extends SapphireTest {
 			$this->assertEquals(DocumentationService::clean_page_name($value), $should[$key]);
 		}
 	}
+	
+	function testIsValidExtension() {
+		$this->assertTrue(DocumentationService::is_valid_extension('md'));
+		$this->assertTrue(DocumentationService::is_valid_extension('markdown'));
+		$this->assertTrue(DocumentationService::is_valid_extension('MD'));
+		$this->assertTrue(DocumentationService::is_valid_extension('MARKDOWN'));
+		
+		$this->assertFalse(DocumentationService::is_valid_extension('.markd'));
+		$this->assertFalse(DocumentationService::is_valid_extension('.exe'));
+		
+		// require an extension as internally we check for extension, not using
+		// one could cause issues.
+		$this->assertFalse(DocumentationService::is_valid_extension(''));
+	}
 }
\ No newline at end of file
diff --git a/tests/DocumentationViewerTest.php b/tests/DocumentationViewerTest.php
index 4c5ee38..75b65d1 100755
--- a/tests/DocumentationViewerTest.php
+++ b/tests/DocumentationViewerTest.php
@@ -29,6 +29,9 @@ class DocumentationViewerTest extends FunctionalTest {
 		DocumentationService::register("DocumentationViewerTests", BASE_PATH . "/sapphiredocs/tests/docs/", '2.3');
 		DocumentationService::register("DocumentationViewerTests", BASE_PATH . "/sapphiredocs/tests/docs-v2.4/", '2.4', 'Doc Test', true);
 		DocumentationService::register("DocumentationViewerTests", BASE_PATH . "/sapphiredocs/tests/docs-v3.0/", '3.0', 'Doc Test');
+		
+		DocumentationService::register("DocumentationViewerAltModule1", BASE_PATH . "/sapphiredocs/tests/docs-parser/", '1.0');
+		DocumentationService::register("DocumentationViewerAltModule2", BASE_PATH . "/sapphiredocs/tests/docs-search/", '1.0');
 	}
 	
 	function tearDownOnce() {
@@ -113,7 +116,7 @@ class DocumentationViewerTest extends FunctionalTest {
 		$this->assertEquals('Subfolder', $page->Title);
 	}
 	
-	function testGetModulePages() {
+	function testGetEntityPages() {
 		$v = new DocumentationViewer();
 		$response = $v->handleRequest(new SS_HTTPRequest('GET', 'DocumentationViewerTests/en/2.3/subfolder/'));
 		$pages = $v->getEntityPages();
@@ -231,4 +234,20 @@ class DocumentationViewerTest extends FunctionalTest {
 		$response = $v->handleRequest(new SS_HTTPRequest('GET', 'DocumentationViewerTests/en/3.0'));
 		$this->assertEquals('3.0', $v->getVersion());		
 	}
+	
+	function testGetEntities() {
+		$v = new DocumentationViewer();
+		$response = $v->handleRequest(new SS_HTTPRequest('GET', 'DocumentationViewerTests/en/2.4'));
+		
+		$pages = $v->getEntities();
+		
+		$this->assertEquals(3, $pages->Count(), 'Registered 3 entities');
+		
+		// check to see the links don't have version or pages in them
+		foreach($pages as $page) {
+			$expected = Controller::join_links('docs', $page->Title, 'en');
+			
+			$this->assertStringEndsWith($expected, $page->Link);
+		}
+	}
 }
\ No newline at end of file
diff --git a/tests/docs-parser/en/_images/external_link.png b/tests/docs-parser/en/_images/external_link.png
new file mode 100644
index 0000000..16f9b92
Binary files /dev/null and b/tests/docs-parser/en/_images/external_link.png differ
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+# File test
+
+[image](_images/external_link.png)
+
+[tar.gz](_images/test.tar.gz)
+
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