diff --git a/codepot/src/codepot/controllers/project.php b/codepot/src/codepot/controllers/project.php
index 0709fe72..9c1f2a46 100644
--- a/codepot/src/codepot/controllers/project.php
+++ b/codepot/src/codepot/controllers/project.php
@@ -154,17 +154,20 @@ class Project extends Controller
 		$project = $this->projects->get ($projectid);
 		if ($project === FALSE)
 		{
+			$data['loginid'] = $loginid;
 			$data['message'] = 'DATABASE ERROR';
 			$this->load->view ($this->VIEW_ERROR, $data);
 		}
 		else if ($project === NULL)
 		{
+			$data['loginid'] = $loginid;
 			$data['message'] = "NO SUCH PROJECT - $projectid";
 			$this->load->view ($this->VIEW_ERROR, $data);
 		}
 		else if (!$this->login->isSysadmin() &&
 		         $this->projects->projectHasMember($project->id, $loginid) === FALSE)
 		{
+			$data['loginid'] = $loginid;
 			$data['message'] = "NO PERMISSION - $projectid";
 			$this->load->view ($this->VIEW_ERROR, $data);
 		}
@@ -243,17 +246,20 @@ class Project extends Controller
 		$project = $this->projects->get ($projectid);
 		if ($project === FALSE)
 		{
+			$data['loginid'] = $loginid;
 			$data['message'] = 'DATABASE ERROR';
 			$this->load->view ($this->VIEW_ERROR, $data);
 		}
 		else if ($project === NULL)
 		{
+			$data['loginid'] = $loginid;
 			$data['message'] = "NO SUCH PROJECT - $projectid";
 			$this->load->view ($this->VIEW_ERROR, $data);
 		}
 		else if (!$this->login->isSysadmin() &&
 		         $this->projects->projectHasMember($project->id, $loginid) === FALSE)
 		{
+			$data['loginid'] = $loginid;
 			$data['message'] = "NO PERMISSION - $projectid";
 			$this->load->view ($this->VIEW_ERROR, $data);
 		}
diff --git a/codepot/src/codepot/controllers/source.php b/codepot/src/codepot/controllers/source.php
index 019a694f..f157574d 100644
--- a/codepot/src/codepot/controllers/source.php
+++ b/codepot/src/codepot/controllers/source.php
@@ -7,6 +7,7 @@ class Source extends Controller
 	var $VIEW_FILE = 'source_file';
 	var $VIEW_BLAME = 'source_blame';
 	var $VIEW_HISTORY = 'source_history';
+	var $VIEW_DIFF = 'source_diff';
 
 	function Source ()
 	{
@@ -36,6 +37,7 @@ class Source extends Controller
 		$data['loginid'] = $loginid;
 
 		$path = $this->converter->HexToAscii ($path);
+		if ($path == '.') $path = ''; /* treat a period specially */
 
 		$project = $this->projects->get ($projectid);
 		if ($project === FALSE)
@@ -58,10 +60,17 @@ class Source extends Controller
 			}
 			else
 			{
+
 				$data['project'] = $project;
 				$data['folder'] = $path;
 				$data['files'] = $files;
+
 				$data['revision'] = $rev;
+				$data['prev_revision'] =
+					$this->subversion->getPrevRev ($projectid, $path, $rev);
+				$data['next_revision'] =
+					$this->subversion->getNextRev ($projectid, $path, $rev);
+
 				$this->load->view ($this->VIEW_FOLDER, $data);
 			}
 		}
@@ -112,11 +121,26 @@ class Source extends Controller
 			}
 			else
 			{
-				$data['project'] = $project;
-				$data['folder'] = substr ($path, 0, strrpos($path, '/'));
-				$data['file'] = $file;
-				$data['revision'] = $rev;
-				$this->load->view ($this->VIEW_FILE, $data);
+				$head_rev = $this->subversion->getHeadRev ($projectid, $path);
+				if ($head_rev === FALSE)
+				{
+					$data['message'] = 'Failed to get head revision';
+					$this->load->view ($this->VIEW_ERROR, $data);
+				}
+				else
+				{
+					$file['head_rev'] = $head_rev;
+					$file['prev_rev'] = $this->subversion->getPrevRev (
+						$projectid, $path, $file['created_rev']);
+					$file['next_rev'] = $this->subversion->getNextRev (
+						$projectid, $path, $file['created_rev']);
+
+					$data['project'] = $project;
+					$data['folder'] = substr ($path, 0, strrpos($path, '/'));
+					$data['file'] = $file;
+					$data['revision'] = $rev;
+					$this->load->view ($this->VIEW_FILE, $data);
+				}
 			}
 		}
 	}
@@ -154,11 +178,26 @@ class Source extends Controller
 			}
 			else
 			{
-				$data['project'] = $project;
-				$data['folder'] = substr ($path, 0, strrpos($path, '/'));
-				$data['file'] = $file;
-				$data['revision'] = $rev;
-				$this->load->view ($this->VIEW_BLAME, $data);
+				$head_rev = $this->subversion->getHeadRev ($projectid, $path);
+				if ($head_rev === FALSE)
+				{
+					$data['message'] = 'Failed to get head revision';
+					$this->load->view ($this->VIEW_ERROR, $data);
+				}
+				else
+				{
+					$file['head_rev'] = $head_rev;
+					$file['prev_rev'] = $this->subversion->getPrevRev (
+						$projectid, $path, $file['created_rev']);
+					$file['next_rev'] = $this->subversion->getNextRev (
+						$projectid, $path, $file['created_rev']);
+
+					$data['project'] = $project;
+					$data['folder'] = substr ($path, 0, strrpos($path, '/'));
+					$data['file'] = $file;
+					$data['revision'] = $rev;
+					$this->load->view ($this->VIEW_BLAME, $data);
+				}
 			}
 		}
 	}
@@ -207,4 +246,55 @@ class Source extends Controller
 		}
 	}
 
+	function diff ($projectid, $path, $rev1 = SVN_REVISION_HEAD, $rev2 = SVN_REVISION_PREV)
+	{
+		$this->load->model ('ProjectModel', 'projects');
+		$this->load->model ('SubversionModel', 'subversion');
+
+		$loginid = $this->login->getUserid ();
+		if (CODEPOT_ALWAYS_REQUIRE_SIGNIN && $loginid == '')
+			redirect ('main/signin');
+		$data['loginid'] = $loginid;
+
+		$path = $this->converter->HexToAscii ($path);
+
+		$project = $this->projects->get ($projectid);
+		if ($project === FALSE)
+		{
+			$data['message'] = 'DATABASE ERROR';
+			$this->load->view ($this->VIEW_ERROR, $data);
+                }
+		else if ($project === NULL)
+		{
+			$data['message'] = "NO SUCH PROJECT - $projectid";
+			$this->load->view ($this->VIEW_ERROR, $data);
+		}
+		else
+		{
+			$file = $this->subversion->getDiff ($projectid, $path, $rev1, $rev2);
+			if ($file === FALSE)
+			{
+				$data['message'] = 'Failed to get diff';
+				$this->load->view ($this->VIEW_ERROR, $data);
+			}
+			else
+			{
+				$file['prev_rev'] =
+					$this->subversion->getPrevRev ($projectid, $path, $file['created_rev']);	
+				$file['next_rev'] =
+					$this->subversion->getNextRev ($projectid, $path, $file['created_rev']);	
+				$file['against']['prev_rev'] = 
+					$this->subversion->getPrevRev ($projectid, $path, $file['against']['created_rev']);
+				$file['against']['next_rev'] = 
+					$this->subversion->getNextRev ($projectid, $path, $file['against']['created_rev']);
+
+				$data['project'] = $project;
+				$data['folder'] = substr ($path, 0, strrpos($path, '/'));
+				$data['file'] = $file;
+				$data['revision1'] = $rev1;
+				$data['revision2'] = $rev2;
+				$this->load->view ($this->VIEW_DIFF, $data);
+			}
+		}
+	}
 }
diff --git a/codepot/src/codepot/language/english/common_lang.php b/codepot/src/codepot/language/english/common_lang.php
index cb4791ff..706ca19b 100644
--- a/codepot/src/codepot/language/english/common_lang.php
+++ b/codepot/src/codepot/language/english/common_lang.php
@@ -7,8 +7,10 @@ $lang['Created on'] = 'Created on';
 $lang['Delete'] = 'Delete';
 $lang['Description'] = 'Description';
 $lang['Details'] = 'Details';
+$lang['Difference'] = 'Diff';
 $lang['Download'] = 'Download';
 $lang['Edit'] = 'Edit';
+$lang['Head revision'] = 'Head revision';
 $lang['History'] = 'History';
 $lang['Home'] = 'Home';
 $lang['File'] = 'File';
@@ -45,6 +47,7 @@ $lang['Username'] = 'Username';
 $lang['Wiki'] = 'Wiki';
 $lang['Wikis'] = 'Wikis';
 
+$lang['MSG_NO_DIFF'] = 'No difference found';
 $lang['MSG_NO_FILES_AVAIL'] = 'No files available';
 $lang['MSG_NO_SOURCE_AVAIL'] = 'No source available';
 $lang['MSG_NO_WIKIS_AVAIL'] = 'No wiki pages available';
diff --git a/codepot/src/codepot/language/indonesian/common_lang.php b/codepot/src/codepot/language/indonesian/common_lang.php
index c0ace5f7..9b8a89c5 100644
--- a/codepot/src/codepot/language/indonesian/common_lang.php
+++ b/codepot/src/codepot/language/indonesian/common_lang.php
@@ -7,8 +7,10 @@ $lang['Created on'] = 'Waktu dibuat';
 $lang['Delete'] = 'Hapus';
 $lang['Description'] = 'Penjelasan';
 $lang['Details'] = 'Detail';
+$lang['Difference'] = 'Beda';
 $lang['Download'] = 'Download';
 $lang['Edit'] = 'Rubah';
+$lang['Head revision'] = 'Kepala Revisi';
 $lang['History'] = 'Sejarah';
 $lang['Home'] = 'Beranda';
 $lang['File'] = 'File';
@@ -45,6 +47,7 @@ $lang['Username'] = 'Nama pemakai';
 $lang['Wiki'] = 'Wiki';
 $lang['Wikis'] = 'Wiki';
 
+$lang['MSG_NO_DIFF'] = 'Tidak ada bedanya';
 $lang['MSG_NO_FILES_AVAIL'] = 'Tidak ada file tersedia';
 $lang['MSG_NO_SOURCE_AVAIL'] = 'Tidak ada sumber tersedia';
 $lang['MSG_NO_WIKIS_AVAIL'] = 'Tidak ada halaman wiki tersedia';
diff --git a/codepot/src/codepot/language/korean/common_lang.php b/codepot/src/codepot/language/korean/common_lang.php
index f8ebc6cb..cbe691f8 100644
--- a/codepot/src/codepot/language/korean/common_lang.php
+++ b/codepot/src/codepot/language/korean/common_lang.php
@@ -7,9 +7,11 @@ $lang['Created on'] = '최초생성시간';
 $lang['Delete'] = '삭제';
 $lang['Description'] = '설명';
 $lang['Details'] = '상세내역';
+$lang['Difference'] = '차이점';
 $lang['Download'] = '내려받기';
 $lang['Edit'] = '수정';
-$lang['History'] = '변경내역';
+$lang['Head revision'] = '최신리비전';
+$lang['History'] = '변경기록';
 $lang['Home'] = '홈';
 $lang['File'] = '파일';
 $lang['Files'] = '파일';
@@ -45,6 +47,7 @@ $lang['Username'] = '사용자명';
 $lang['Wiki'] = '위키';
 $lang['Wikis'] = '위키';
 
+$lang['MSG_NO_DIFF'] = '차이점이 없습니다';
 $lang['MSG_NO_FILES_AVAIL'] = '사용가능한 파일이 없습니다';
 $lang['MSG_NO_SOURCE_AVAIL'] = '사용가능한 소스가 없습니다';
 $lang['MSG_NO_WIKIS_AVAIL'] = '사용가능한 위키페이지가 없습니다';
diff --git a/codepot/src/codepot/models/projectmodel.php b/codepot/src/codepot/models/projectmodel.php
index 5d058b0e..de550adc 100644
--- a/codepot/src/codepot/models/projectmodel.php
+++ b/codepot/src/codepot/models/projectmodel.php
@@ -241,9 +241,9 @@ class ProjectModel extends Model
 
 	function deleteDirectory($dir) 
 	{
-		if (is_link($dir)) return unlink($dir);
+		if (is_link($dir)) return @unlink($dir);
 		if (!file_exists($dir)) return TRUE;
-		if (!is_dir($dir)) return unlink($dir);
+		if (!is_dir($dir)) return @unlink($dir);
 
 		foreach ($this->_scandir($dir) as $item) 
 		{
diff --git a/codepot/src/codepot/models/subversionmodel.php b/codepot/src/codepot/models/subversionmodel.php
index 35c8a906..796d27f8 100644
--- a/codepot/src/codepot/models/subversionmodel.php
+++ b/codepot/src/codepot/models/subversionmodel.php
@@ -68,6 +68,337 @@ class SubversionModel extends Model
 		$fileinfo['history'] = $str;
 		return $fileinfo;
 	}
+
+	function _get_diff ($diff, $all, $ent)
+	{
+		/* copied from websvn */
+
+		if ($all) 
+		{
+			$ofile = fopen ($oldtname, "r");
+			$nfile = fopen ($newtname, "r");
+		}
+
+		// Ignore the 4 header lines
+		$line = fgets($diff);
+		$line = fgets($diff);
+		$line = fgets($diff);
+		$line = fgets($diff);
+
+		// Get the first real line
+		$line = fgets($diff);
+
+		$index = 0;
+		$listing = array();
+
+		$curoline = 1;
+		$curnline = 1;
+
+		while (!feof($diff)) 
+		{
+			// Get the first line of this range
+			sscanf($line, "@@ -%d", $oline);
+
+			$line = substr($line, strpos($line, "+"));
+			sscanf($line, "+%d", $nline);
+
+			if ($all) 
+			{
+				while ($curoline < $oline || $curnline < $nline) 
+				{
+					$listing[$index]["rev1diffclass"] = "diff";
+					$listing[$index]["rev2diffclass"] = "diff";
+
+					if ($curoline < $oline) 
+					{
+						$nl = fgets($ofile);
+
+						$line = rtrim($nl);
+						if ($ent) $line = replaceEntities($line, $rep);
+
+						//$listing[$index]["rev1line"] = hardspace($line);
+						$listing[$index]["rev1line"] = $line;
+
+						$curoline++;
+					} 
+					else 
+					{
+						//$listing[$index]["rev1line"] = "&nbsp;";
+						$listing[$index]["rev1line"] = "";
+					}
+
+					if ($curnline < $nline) 
+					{
+						$nl = fgets($nfile);
+
+						$line = rtrim($nl);
+						if ($ent) $line = replaceEntities($line, $rep);
+
+						//$listing[$index]["rev2line"] = hardspace($line);
+						$listing[$index]["rev2line"] = $line;
+						$curnline++;
+					} 
+					else 
+					{
+						//$listing[$index]["rev2line"] = "&nbsp;";
+						$listing[$index]["rev2line"] = "";
+					}
+
+					$listing[$index]["rev1lineno"] = 0;
+					$listing[$index]["rev2lineno"] = 0;
+
+					$index++;
+				}
+			} 
+			else 
+			{
+				// Output the line numbers
+				$listing[$index]["rev1lineno"] = $oline;
+				$listing[$index]["rev2lineno"] = $nline;
+				$index++;
+			}
+
+			$fin = false;
+			while (!feof($diff) && !$fin) 
+			{
+				$line = fgets($diff);
+				if ($line === false || strncmp($line, "@@", 2) == 0) 
+				{
+					$fin = true;
+				} 
+				else 
+				{
+					$listing[$index]["rev1lineno"] = 0;
+					$listing[$index]["rev2lineno"] = 0;
+
+					$mod = $line{0};
+
+					$line = rtrim(substr($line, 1));
+					if ($ent) $line = replaceEntities($line, $rep);
+
+					//if (strip_tags($line) == '') $line = '&nbsp;';
+					//$listing[$index]["rev1line"] = hardspace($line);
+					$listing[$index]["rev1line"] = $line;
+
+					//$text = hardspace($line);
+					$text = $line;
+
+					switch ($mod) 
+					{
+						case "-":
+							$listing[$index]["rev1diffclass"] = "diffdeleted";
+							$listing[$index]["rev2diffclass"] = "diff";
+
+							$listing[$index]["rev1line"] = $text;
+							//$listing[$index]["rev2line"] = "&nbsp;";
+							$listing[$index]["rev2line"] = '';
+
+							if ($all) {
+								fgets($ofile);
+								$curoline++;
+							}
+
+							break;
+
+						case "+":
+							// Try to mark "changed" line sensibly
+							if (!empty($listing[$index-1]) && 
+							    empty($listing[$index-1]["rev1lineno"]) && 
+							    @$listing[$index-1]["rev1diffclass"] == "diffdeleted" &&
+							    @$listing[$index-1]["rev2diffclass"] == "diff") 
+							{
+								$i = $index - 1;
+								while (!empty($listing[$i-1]) &&
+								       empty($listing[$i-1]["rev1lineno"]) &&
+								       $listing[$i-1]["rev1diffclass"] == "diffdeleted" &&
+								       $listing[$i-1]["rev2diffclass"] == "diff") 
+								{
+									$i--;
+								}
+
+								$listing[$i]["rev1diffclass"] = "diffchanged";
+								$listing[$i]["rev2diffclass"] = "diffchanged";
+								$listing[$i]["rev2line"] = $text;
+
+								if ($all) {
+									fgets($nfile);
+									$curnline++;
+								}
+
+								// Don't increment the current index count
+								$index--;
+
+							} else {
+								$listing[$index]["rev1diffclass"] = "diff";
+								$listing[$index]["rev2diffclass"] = "diffadded";
+
+								//$listing[$index]["rev1line"] = "&nbsp;";
+								$listing[$index]["rev1line"] = '';
+								$listing[$index]["rev2line"] = $text;
+
+								if ($all) {
+									fgets($nfile);
+									$curnline++;
+								}
+							}
+							break;
+
+						default:
+							$listing[$index]["rev1diffclass"] = "diff";
+							$listing[$index]["rev2diffclass"] = "diff";
+
+							$listing[$index]["rev1line"] = $text;
+							$listing[$index]["rev2line"] = $text;
+
+							if ($all) {
+								fgets($ofile);
+								fgets($nfile);
+								$curoline++;
+								$curnline++;
+							}
+
+							break;
+					}
+				}
+
+				if (!$fin) {
+					$index++;
+				}
+			}
+		}
+
+		// Output the rest of the files
+		if ($all) 
+		{
+			while (!feof($ofile) || !feof($nfile)) 
+			{
+				$listing[$index]["rev1diffclass"] = "diff";
+				$listing[$index]["rev2diffclass"] = "diff";
+
+				$line = rtrim(fgets($ofile));
+				if ($ent) $line = replaceEntities($line, $rep);
+
+				if (!feof($ofile)) {
+					//$listing[$index]["rev1line"] = hardspace($line);
+					$listing[$index]["rev1line"] = $line;
+				}
+				else {
+					//$listing[$index]["rev1line"] = "&nbsp;";
+					$listing[$index]["rev1line"] = ''; 
+				}
+
+				$line = rtrim(fgets($nfile));
+				if ($ent) $line = replaceEntities(rtrim(fgets($nfile)), $rep);
+
+				if (!feof($nfile)) {
+					//$listing[$index]["rev2line"] = hardspace($line);
+					$listing[$index]["rev2line"] = $line;
+				}
+				else {
+					//$listing[$index]["rev2line"] = "&nbsp;";
+					$listing[$index]["rev2line"] = '';
+				}
+
+				$listing[$index]["rev1lineno"] = 0;
+				$listing[$index]["rev2lineno"] = 0;
+
+				$index++;
+			}
+		}
+
+		return $listing;
+	}
+
+	function getDiff ($projectid, $file, $rev1, $rev2)
+	{
+		$path = 'file:///' . CODEPOT_SVNREPO_DIR .  '/' . $projectid . '/' . $file;
+
+		$info = @svn_ls ($path, $rev1, FALSE);
+		if ($info === FALSE) return FALSE;
+
+		$last = substr(strrchr($path, '/'), 1);
+		if (array_key_exists ($last, $info) === FALSE) return FALSE;
+		$fileinfo = $info[$last];
+
+		$rev1 = $info[$last]['created_rev'];
+
+		if ($rev2 <= 0)
+		{
+			/*
+			$log = @svn_log ($path, $rev1, SVN_REVISION_INITIAL, 2);
+			if ($log === FALSE) return FALSE;
+			if (count($log) < 2) return FALSE;
+			$rev2 = $log[1]['rev'];
+			*/
+			$rev2 = $rev1 - 1;
+			if ($rev2 <= 0) $rev2 = $rev1;
+		}
+
+		$info2 = @svn_ls ($path, $rev2, FALSE);
+		if ($info2 === FALSE) 
+		{
+			$rev2 = $rev1;
+			$info2 = @svn_ls ($path, $rev2, FALSE);
+			if ($info2 === FALSE) return FALSE;
+		}
+
+		if (array_key_exists ($last, $info2) === FALSE) return FALSE;
+		$rev2 = $info2[$last]['created_rev'];
+
+		list($diff, $errors) = @svn_diff ($path, $rev2, $path, $rev1);
+		if (!$diff) return FALSE;
+
+		fclose($errors);
+
+		$fileinfo['content'] = $this->_get_diff ($diff, FALSE, FALSE);
+		fclose ($diff);
+
+/*
+print_r ($info[$last]);
+print_r ($info2[$last]);
+*/
+		$fileinfo['against'] = $info2[$last];
+		return $fileinfo;
+	}
+
+	function getPrevRev ($projectid, $file, $rev)
+	{
+		$path = 'file:///' . CODEPOT_SVNREPO_DIR .  '/' . $projectid . '/' . $file;
+
+		$info = @svn_log ($path, $rev, SVN_REVISION_INITIAL, 2, SVN_OMIT_MESSAGES);
+		if ($info === FALSE) return $rev;
+
+		$count = count($info);
+		if ($count <= 0) return $rev;
+		if ($count == 1) return $info[0]['rev'];
+		
+		return $info[1]['rev'];
+	}
+
+	function getNextRev ($projectid, $file, $rev)
+	{
+		$path = 'file:///' . CODEPOT_SVNREPO_DIR .  '/' . $projectid . '/' . $file;
+
+		$info = @svn_log ($path, SVN_REVISION_HEAD, $rev, 0, SVN_OMIT_MESSAGES);
+		if ($info === FALSE) return $rev;
+
+		$count = count($info);
+		if ($count <= 0) return $rev;
+		if ($count == 1) return $info[0]['rev'];
+		
+		return $info[$count-2]['rev'];
+	}
+
+	function getHeadRev ($projectid, $file)
+	{
+		$path = 'file:///' . CODEPOT_SVNREPO_DIR .  '/' . $projectid . '/' . $file;
+
+		$info = @svn_log ($path, SVN_REVISION_HEAD, SVN_REVISION_INITIAL, 1, SVN_OMIT_MESSAGES);
+		if ($info === FALSE) return FALSE;
+		if (count($info) != 1) return FALSE;
+		return $info[0]['rev'];
+	}
+
 }
 
 ?>
diff --git a/codepot/src/codepot/views/Makefile.am b/codepot/src/codepot/views/Makefile.am
index ee85d56b..d1a765eb 100644
--- a/codepot/src/codepot/views/Makefile.am
+++ b/codepot/src/codepot/views/Makefile.am
@@ -14,6 +14,7 @@ www_DATA =  \
 	project_list.php \
 	projectbar.php \
 	source_blame.php \
+	source_diff.php \
 	source_file.php \
 	source_folder.php \
 	source_history.php \
diff --git a/codepot/src/codepot/views/Makefile.in b/codepot/src/codepot/views/Makefile.in
index 5865189f..7148cb6f 100644
--- a/codepot/src/codepot/views/Makefile.in
+++ b/codepot/src/codepot/views/Makefile.in
@@ -177,6 +177,7 @@ www_DATA = \
 	project_list.php \
 	projectbar.php \
 	source_blame.php \
+	source_diff.php \
 	source_file.php \
 	source_folder.php \
 	source_history.php \
diff --git a/codepot/src/codepot/views/file_home.php b/codepot/src/codepot/views/file_home.php
index 9a414f53..a254f15f 100644
--- a/codepot/src/codepot/views/file_home.php
+++ b/codepot/src/codepot/views/file_home.php
@@ -34,7 +34,7 @@ $this->load->view (
 <div class="mainarea" id="project_file_home_mainarea">
 <div class="title"><?=$this->lang->line('Files')?></div>
 
-<div id="project_file_home_textarea">
+<div id="project_file_home_mainarea_result">
 <?php
 if (empty($files))
 {
@@ -55,8 +55,8 @@ else
 
         usort ($files, 'comp_files');
 
-	print '<table>';
-	print '<tr>';
+	print '<table id="project_file_home_mainarea_result_table">';
+	print '<tr class="heading">';
 	print '<th>' . $this->lang->line('Tag') . '</th>';
 	print '<th>' . $this->lang->line('Name') . '</th>';
 	print '<th>' . $this->lang->line('Summary') . '</th>';
@@ -65,10 +65,13 @@ else
 	print '</tr>';
 	
 	$oldtag = '';
+	$rownum = 0;
+	$rowclasses = array ('odd', 'even');
 	foreach ($files as $file) 
 	{
 		$hexname = $this->converter->AsciiToHex ($file->name);
-		print '<tr>';
+		$rowclass = $rowclasses[$rownum++ % 2];
+		print "<tr class='{$rowclass}'>";
 		print '<td>';
 		if ($file->tag != $oldtag)
 		{
@@ -82,9 +85,9 @@ else
 		print '<td>';
 		print htmlspecialchars($file->summary);
 		print '</td>';
-		print '<td>';
+		print '<td><tt>';
 		print $file->md5sum;
-		print '</td>';
+		print '</tt></td>';
 		print '<td>';
 		print anchor ("file/get/{$project->id}/{$hexname}", $this->lang->line('Download'));
 		print '</td>';
diff --git a/codepot/src/codepot/views/source_blame.php b/codepot/src/codepot/views/source_blame.php
index 384ffc40..b9559784 100644
--- a/codepot/src/codepot/views/source_blame.php
+++ b/codepot/src/codepot/views/source_blame.php
@@ -33,31 +33,29 @@ $this->load->view (
 );
 ?>
 
-<!---------------------------------------------------------------------------->
-
-<div class="sidebar" id="project_source_blame_sidebar">
-
-<div class="box">
-<div class="boxtitle"><?=$this->lang->line('File')?></div>
-<ul>
-<li><?=$this->lang->line('Revision')?>: <?=$file['created_rev']?></li>
-<li><?=$this->lang->line('Author')?>: <?=htmlspecialchars($file['last_author'])?></li>
-<li><?=$this->lang->line('Size')?>: <?=$file['size']?></li>
-<li><?=$this->lang->line('Last updated on')?>: <?=$file['time']?></li>
-</ul>
-</div>
-
-</div> <!-- project_source_blame_sidebar -->
-
-
 <!---------------------------------------------------------------------------->
 
 <div class="mainarea" id="project_source_blame_mainarea">
 
 <div class="title" id="project_source_blame_mainarea_title">
 <?php
-$xpar = '/source/folder/' . $project->id;
-print anchor ($xpar, htmlspecialchars($project->name));
+if ($revision <= 0)
+{
+	$revreq = '';
+	$revreqroot = '';
+}
+else
+{
+	//$revreq = ($file['created_rev'] == $file['head_rev'])? '': "/{$file['created_rev']}";
+	//$revreqroot = ($revreq == '')? '': ('/' . $this->converter->AsciiToHex ('.') . $revreq);
+	$revreq = "/{$revision}";
+	$revreqroot = '/' . $this->converter->AsciiToHex ('.') . $revreq;
+}
+
+print anchor (
+	"/source/folder/{$project->id}{$revreqroot}",
+	htmlspecialchars($project->name));
+
 if ($folder != '')
 {
 	$exps = explode ('/', $folder);
@@ -65,39 +63,59 @@ if ($folder != '')
 	$par = '';
 	for ($i = 1; $i < $expsize; $i++)
 	{
+		print '/';
+
 		$par .= '/' . $exps[$i];
 		$hexpar = $this->converter->AsciiToHex ($par);
-		print '/';
-		$xpar = 'source/folder/' . $project->id . '/' . $hexpar;
-		if ($revision != SVN_REVISION_HEAD) $xpar .= '/' . $revision;
-		print anchor ($xpar, htmlspecialchars($exps[$i]));
+		print anchor (
+			"source/folder/{$project->id}/{$hexpar}{$revreq}",
+			htmlspecialchars($exps[$i]));
 	}
 }
-$par = $folder . '/' . $file['name'];
-$par = $this->converter->AsciiTohex ($par);
+
 print '/';
-$xpar = '/source/blame/' . $project->id . '/' . $par;
-if ($revision != SVN_REVISION_HEAD) $xpar .= '/' . $revision;
-print anchor ($xpar, htmlspecialchars($file['name']));
+
+$par = $this->converter->AsciiTohex ("{$folder}/{$file['name']}");
+print anchor (
+	"/source/blame/{$project->id}/{$par}{$revreq}",
+	htmlspecialchars($file['name']));
 ?>
 </div> <!-- project_source_blame_mainarea_title -->
 
 <div class="menu" id="project_source_blame_mainarea_menu">
 <?php
-$par = $folder . '/' . $file['name'];
-$par = $this->converter->AsciiTohex ($par);
-$xpar = 'source/file/' . $project->id . '/' . $par;
-if ($revision != SVN_REVISION_HEAD) $xpar .= '/' . $revision;
-print anchor ($xpar, $this->lang->line('Details'));
+$par = $this->converter->AsciiToHex ("{$folder}/{$file['name']}");
+
+
+if ($file['created_rev'] != $file['head_rev'])
+{
+	print anchor ("source/file/{$project->id}/${par}", $this->lang->line('Head revision'));
+	print ' | ';
+}
+
+print anchor ("source/file/{$project->id}/${par}{$revreq}", $this->lang->line('Details'));
 print ' | ';
-print anchor ('source/history/file/' . $project->id . '/' . $par, $this->lang->line('History'));
+print anchor ("source/diff/{$project->id}/{$par}{$revreq}", $this->lang->line('Difference'));
+print ' | ';
+print anchor ("source/history/file/{$project->id}/{$par}", $this->lang->line('History'));
+
 ?>
 </div> <!-- project_source_blame_mainarea_menu -->
 
+<div class="infostrip">
+<?=anchor ("source/file/{$project->id}/${par}/{$file['prev_rev']}", '<<')?> 
+<?=$this->lang->line('Revision')?>: <?=$file['created_rev']?> 
+<?=anchor ("source/file/{$project->id}/${par}/{$file['next_rev']}", '>>')?> |
+<?=$this->lang->line('Author')?>: <?=htmlspecialchars($file['last_author'])?> |
+<?=$this->lang->line('Size')?>: <?=$file['size']?> |
+<?=$this->lang->line('Last updated on')?>: <?=$file['time']?>
+</div>
+
 <?php 
 $fileext = substr(strrchr($file['name'], '.'), 1);
 if ($fileext == "") $fileext = "html"
 ?>
+
 <pre class="prettyprint lang-<?=$fileext?>">
 <?php
 
diff --git a/codepot/src/codepot/views/source_diff.php b/codepot/src/codepot/views/source_diff.php
new file mode 100644
index 00000000..328a4700
--- /dev/null
+++ b/codepot/src/codepot/views/source_diff.php
@@ -0,0 +1,223 @@
+<html>
+
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+<link type="text/css" rel="stylesheet" href="<?=base_url()?>/css/common.css" />
+<link type="text/css" rel="stylesheet" href="<?=base_url()?>/css/project.css" />
+<script type="text/javascript" src="<?=base_url()?>/js/prettify/prettify.js"></script>
+<script type="text/javascript" src="<?=base_url()?>/js/prettify/lang-css.js"></script>
+<script type="text/javascript" src="<?=base_url()?>/js/prettify/lang-lisp.js"></script>
+<script type="text/javascript" src="<?=base_url()?>/js/prettify/lang-lua.js"></script>
+<script type="text/javascript" src="<?=base_url()?>/js/prettify/lang-sql.js"></script>
+<script type="text/javascript" src="<?=base_url()?>/js/prettify/lang-vb.js"></script>
+<title><?=htmlspecialchars($project->name)?></title>
+</head>
+
+<body onload="prettyPrint()">
+
+<div class="content" id="project_source_diff_content">
+
+<!---------------------------------------------------------------------------->
+
+<?php $this->load->view ('taskbar'); ?>
+
+<!---------------------------------------------------------------------------->
+
+<?php
+$this->load->view (
+	'projectbar',
+	array (
+		'pageid' => 'source',
+		'ctxmenuitems' => array ()
+	)
+);
+?>
+
+<!---------------------------------------------------------------------------->
+
+<div class="mainarea" id="project_source_diff_mainarea">
+
+<div class="title" id="project_source_diff_mainarea_title">
+<?php
+$xpar = '/source/folder/' . $project->id;
+print anchor ($xpar, htmlspecialchars($project->name));
+if ($folder != '')
+{
+	$exps = explode ('/', $folder);
+	$expsize = count($exps);
+	$par = '';
+	for ($i = 1; $i < $expsize; $i++)
+	{
+		$par .= '/' . $exps[$i];
+		$hexpar = $this->converter->AsciiToHex ($par);
+		print '/';
+		$xpar = 'source/folder/' . $project->id . '/' . $hexpar;
+		if ($revision1 != SVN_REVISION_HEAD) $xpar .= '/' . $revision1;
+		print anchor ($xpar, htmlspecialchars($exps[$i]));
+	}
+}
+$par = $folder . '/' . $file['name'];
+$par = $this->converter->AsciiTohex ($par);
+print '/';
+$xpar = '/source/file/' . $project->id . '/' . $par;
+if ($revision1 != SVN_REVISION_HEAD) $xpar .= '/' . $revision1;
+print anchor ($xpar, htmlspecialchars($file['name']));
+?>
+</div> <!-- project_source_diff_mainarea_title -->
+
+
+<div class="menu" id="project_source_diff_mainarea_menu">
+<?php
+$par = $folder . '/' . $file['name'];
+$par = $this->converter->AsciiTohex ($par);
+
+$xdetails = "source/file/{$project->id}/{$par}";
+$xblame = "source/blame/{$project->id}/{$par}";
+if ($revision1 != SVN_REVISION_HEAD) 
+{
+	$xdetails .= "/{$revision1}";
+	$xblame .= "/{$revision1}";
+}
+
+print anchor ($xdetails, $this->lang->line('Details'));
+print ' | ';
+print anchor ($xblame, $this->lang->line('Blame'));
+print ' | ';
+print anchor ("source/history/file/{$project->id}/{$par}", $this->lang->line('History'));
+?>
+</div> <!-- project_source_diff_mainarea_menu -->
+
+<div class="infostrip" id="project_source_diff_mainarea_infostrip">
+<?=$this->lang->line('Revision')?>: <?=$file['created_rev']?> |
+<?=$this->lang->line('Author')?>: <?=htmlspecialchars($file['last_author'])?> |
+<?=$this->lang->line('Size')?>: <?=$file['size']?> |
+<?=$this->lang->line('Last updated on')?>: <?=$file['time']?>
+</div>
+
+
+<?php 
+$fileext = substr(strrchr($file['name'], '.'), 1);
+if ($fileext == "") $fileext = "html"
+?>
+
+<div id="project_source_diff_mainarea_result">
+<table id="project_source_diff_mainarea_result_table">
+<?php
+
+	/*
+	print '<pre>';	
+	print_r ($file['content']);
+	print '</pre>';
+	*/
+
+	print '<tr class="heading">';
+	print '<th>';
+
+	$currev = $file['created_rev'];
+	$prevrev = $file['against']['prev_rev'];
+	$prevanc = "source/diff/{$project->id}/{$par}/{$currev}/{$prevrev}";
+	print anchor ($prevanc, '<<');
+	print '&nbsp;&nbsp;&nbsp;';
+
+	print $this->lang->line('Revision');
+	print ' ';
+	print $file['against']['created_rev'];
+
+	$currev = $file['created_rev'];
+	$nextrev = $file['against']['next_rev'];
+	$nextanc = "source/diff/{$project->id}/{$par}/{$currev}/{$nextrev}";
+	print '&nbsp;&nbsp;&nbsp;';
+	print anchor ($nextanc, '>>');
+
+	print '</th>';
+
+	print '<th>';
+
+	$currev = $file['against']['created_rev'];
+	$prevrev = $file['prev_rev'];
+	$prevanc = "source/diff/{$project->id}/{$par}/{$prevrev}/{$currev}";
+	print anchor ($prevanc, '<<');
+	print '&nbsp;&nbsp;&nbsp;';
+
+	print $this->lang->line('Revision');
+	print ' ';
+	print $file['created_rev'];
+
+	$currev = $file['against']['created_rev'];
+	$nextrev = $file['next_rev'];
+	$nextanc = "source/diff/{$project->id}/{$par}/{$nextrev}/{$currev}";
+	print '&nbsp;&nbsp;&nbsp;';
+	print anchor ($nextanc, '>>');
+
+	print '</th>';
+	print '</tr>';
+
+	if (empty($file['content']))
+	{
+		print '<tr>';
+		print '<td colspan=2>';
+		print htmlspecialchars ($this->lang->line('MSG_NO_DIFF'));
+		print '</td>';
+		print '</tr>';
+	}
+	else
+	{
+		foreach ($file['content'] as $x)
+		{
+			print '<tr class="diff">';
+	
+			if (array_key_exists('rev1line', $x)) 
+			{
+				$diffclass = array_key_exists('rev1diffclass', $x)? $x['rev1diffclass']: 'diff';
+				print "<td class='{$diffclass}'>";
+				print "<pre class='prettyprint lang-{$fileext}'>";
+				print htmlspecialchars($x['rev1line']);
+				print '</pre>';
+				print '</td>';
+			}
+			else
+			{
+				print '<td class="diffrow">';
+				print $x['rev1lineno'];
+				print '</td>';
+			}
+	
+			if (array_key_exists('rev2line', $x)) 
+			{
+				$diffclass = array_key_exists('rev2diffclass', $x)? $x['rev2diffclass']: 'diff';
+				print "<td class='{$diffclass}'>";
+				print "<pre class='prettyprint lang-{$fileext}'>";
+				print htmlspecialchars($x['rev2line']);
+				print '</pre>';
+				print '</td>';
+			}
+			else
+			{
+				print '<td class="diffrow">';
+				print $x['rev2lineno'];
+				print '</td>';
+			}
+	
+			print '</tr>';
+		}
+	}
+?>
+</table>
+</div>
+
+</div> <!-- project_source_diff_mainarea -->
+
+
+<!---------------------------------------------------------------------------->
+
+
+<?php $this->load->view ('footer'); ?>
+
+<!---------------------------------------------------------------------------->
+
+</div> <!--  project_source_diff_content -->
+
+</body>
+
+</html>
+
diff --git a/codepot/src/codepot/views/source_file.php b/codepot/src/codepot/views/source_file.php
index ff3ca8e9..3d536a67 100644
--- a/codepot/src/codepot/views/source_file.php
+++ b/codepot/src/codepot/views/source_file.php
@@ -32,30 +32,30 @@ $this->load->view (
 	)
 );
 ?>
-<!---------------------------------------------------------------------------->
-
-<div class="sidebar" id="project_source_file_sidebar">
-<div class="box">
-<div class="boxtitle"><?=$this->lang->line('File')?></div>
-<ul>
-<li><?=$this->lang->line('Revision')?>: <?=$file['created_rev']?></li>
-<li><?=$this->lang->line('Author')?>: <?=htmlspecialchars($file['last_author'])?></li>
-<li><?=$this->lang->line('Size')?>: <?=$file['size']?></li>
-<li><?=$this->lang->line('Last updated on')?>: <?=$file['time']?></li>
-</ul>
-</div>
-
-</div> <!-- project_source_file_sidebar -->
-
 
 <!---------------------------------------------------------------------------->
 
 <div class="mainarea" id="project_source_file_mainarea">
 
-<div class="title" id="project_source_file_title">
+<div class="title" id="project_source_file_mainarea_title">
 <?php
-$xpar = '/source/folder/' . $project->id;
-print anchor ($xpar, htmlspecialchars($project->name));
+if ($revision <= 0)
+{
+	$revreq = '';
+	$revreqroot = '';
+}
+else
+{
+	//$revreq = ($file['created_rev'] == $file['head_rev'])? '': "/{$file['created_rev']}";
+	//$revreqroot = ($revreq == '')? '': ('/' . $this->converter->AsciiToHex ('.') . $revreq);
+	$revreq = "/{$revision}";
+	$revreqroot = '/' . $this->converter->AsciiToHex ('.') . $revreq;
+}
+
+print anchor (
+	"/source/folder/{$project->id}{$revreqroot}",
+	htmlspecialchars($project->name));
+
 if ($folder != '')
 {
 	$exps = explode ('/', $folder);
@@ -63,36 +63,52 @@ if ($folder != '')
 	$par = '';
 	for ($i = 1; $i < $expsize; $i++)
 	{
+		print '/';
+
 		$par .= '/' . $exps[$i];
 		$hexpar = $this->converter->AsciiToHex ($par);
-		print '/';
-		$xpar = 'source/folder/' . $project->id . '/' . $hexpar;
-		if ($revision != SVN_REVISION_HEAD) $xpar .= '/' . $revision;
-		print anchor ($xpar, htmlspecialchars($exps[$i]));
+		print anchor (
+			"source/folder/{$project->id}/{$hexpar}{$revreq}",
+			htmlspecialchars($exps[$i]));
 	}
 }
-$par = $folder . '/' . $file['name'];
-$par = $this->converter->AsciiTohex ($par);
+
 print '/';
-$xpar = '/source/file/' . $project->id . '/' . $par;
-if ($revision != SVN_REVISION_HEAD) $xpar .= '/' . $revision;
-print anchor ($xpar, htmlspecialchars($file['name']));
+
+$par = $this->converter->AsciiTohex ("{$folder}/{$file['name']}");
+print anchor (
+        "/source/file/{$project->id}/{$par}{$revreq}",
+        htmlspecialchars($file['name']));
 ?>
 </div> <!-- project_source_file_mainarea_title -->
 
-
 <div class="menu" id="project_source_file_mainarea_menu">
 <?php
-$par = $folder . '/' . $file['name'];
-$par = $this->converter->AsciiTohex ($par);
-$xpar = 'source/blame/' . $project->id . '/' . $par;
-if ($revision != SVN_REVISION_HEAD) $xpar .= '/' . $revision;
-print anchor ($xpar, $this->lang->line('Blame'));
+$par = $this->converter->AsciiToHex ("{$folder}/{$file['name']}");
+
+if ($file['created_rev'] != $file['head_rev']) 
+{
+	print anchor ("source/file/{$project->id}/${par}", $this->lang->line('Head revision'));
+	print ' | ';
+}
+
+print anchor ("source/blame/{$project->id}/${par}{$revreq}", $this->lang->line('Blame'));
 print ' | ';
-print anchor ('source/history/file/' . $project->id . '/' . $par, $this->lang->line('History'));
+print anchor ("source/diff/{$project->id}/{$par}{$revreq}", $this->lang->line('Difference'));
+print ' | ';
+print anchor ("source/history/file/{$project->id}/{$par}", $this->lang->line('History'));
 ?>
 </div> <!-- project_source_file_mainarea_menu -->
 
+<div class="infostrip">
+<?=anchor ("source/file/{$project->id}/${par}/{$file['prev_rev']}", '<<')?> 
+<?=$this->lang->line('Revision')?>: <?=$file['created_rev']?> 
+<?=anchor ("source/file/{$project->id}/${par}/{$file['next_rev']}", '>>')?> |
+<?=$this->lang->line('Author')?>: <?=htmlspecialchars($file['last_author'])?> |
+<?=$this->lang->line('Size')?>: <?=$file['size']?> |
+<?=$this->lang->line('Last updated on')?>: <?=$file['time']?> 
+</div>
+
 <?php 
 $fileext = substr(strrchr($file['name'], '.'), 1);
 if ($fileext == "") $fileext = "html"
diff --git a/codepot/src/codepot/views/source_folder.php b/codepot/src/codepot/views/source_folder.php
index f5e31a16..655a051c 100644
--- a/codepot/src/codepot/views/source_folder.php
+++ b/codepot/src/codepot/views/source_folder.php
@@ -29,14 +29,15 @@ $this->load->view (
 
 <!---------------------------------------------------------------------------->
 
-<div class="sidebar" id="project_source_folder_sidebar">
-<div class="box">
-<div class="boxtitle"><?=$this->lang->line('Folder')?></div>
-<ul>
-<li><?=$this->lang->line('Revision')?>: <?=$revision?></li>
-</ul>
-</div>
-</div> <!-- project_source_folder_sidebar -->
+<?php if ($revision >= 0): ?>
+	<div class="sidebar" id="project_source_folder_sidebar">
+	<div class="box">
+	<ul>
+	<li><?=$this->lang->line('Revision')?>: <?=$revision?></li>
+	</ul>
+	</div>
+	</div> <!-- project_source_folder_sidebar -->
+<?php endif; ?>
 
 
 <!---------------------------------------------------------------------------->
@@ -46,7 +47,18 @@ $this->load->view (
 
 <div class="title">
 <?php
-print anchor ('/source/folder/' . $project->id, htmlspecialchars($project->name));
+if ($revision <= 0)
+{
+	$revreq = '';
+	$revreqroot = '';
+}
+else
+{
+	$revreq = "/{$revision}";
+	$revreqroot = '/' . $this->converter->AsciiToHex ('.') . $revreq;
+}
+
+print anchor ("/source/folder/{$project->id}{$revreqroot}", htmlspecialchars($project->name));
 if ($folder != '') 
 {
 	$exps = explode ('/', $folder);
@@ -54,10 +66,11 @@ if ($folder != '')
 	$par = '';
 	for ($i = 1; $i < $expsize; $i++)
 	{
+		print '/';
+
 		$par .= '/' . $exps[$i];
 		$hexpar = $this->converter->AsciiToHex ($par);
-		print '/';
-		print anchor ('source/folder/' . $project->id . '/' . $hexpar, htmlspecialchars($exps[$i]));
+		print anchor ("source/folder/{$project->id}/{$hexpar}{$revreq}", htmlspecialchars($exps[$i]));
 	}
 }
 ?>
@@ -82,32 +95,45 @@ if ($folder != '')
 	else 
 	{
 		print '<div class="menu" id="project_source_folder_mainarea_menu">';
-		$par = $this->converter->AsciiTohex ($folder);
-		print anchor ('source/history/folder/' . $project->id . '/' . $par, $this->lang->line('History'));
+		$hexpar = $this->converter->AsciiTohex ($folder);
+		if ($revision > 0 && $revision < $next_revision)
+		{
+			print anchor ("source/folder/{$project->id}", $this->lang->line('Head revision'));
+			print ' | ';
+		}
+		print anchor ("source/history/folder/{$project->id}/{$hexpar}", $this->lang->line('History'));
 		print '</div>';
 
 		usort ($files, 'comp_files');
 
-		print '<table>';
-		print '<tr>';
+		print '<div id="project_source_folder_mainarea_result">';
+		print '<table id="project_source_folder_mainarea_result_table">';
+		print '<tr class="heading">';
 		print '<th>' . $this->lang->line('Name') . '</th>';
 		print '<th>' . $this->lang->line('Revision') . '</th>';
 		print '<th>' . $this->lang->line('Size') . '</th>';
 		print '<th>' . $this->lang->line('Author') . '</th>';
 		print '<th>' . $this->lang->line('Time') . '</th>';
+		print '<th>' . '</th>';
+		print '<th>' . '</th>';
 		print '</tr>';
+
+		$rowclasses = array ('even', 'odd');
+		$rownum = 0;
 		foreach ($files as $f)
 		{
 			$fullpath = $folder . '/' . $f['name'];
 
+			$rowclass = $rowclasses[++$rownum % 2];
 			if ($f['type'] === 'dir')
 			{
 				// directory 
-				print '<tr>';
+				$hexpath = $this->converter->AsciiToHex($fullpath);
+       		         	print "<tr class='{$rowclass}'>";
 				print '<td>';
-				$url = 'source/folder/' . $project->id . '/' . 
-					$this->converter->AsciiToHex ($fullpath);
-				print anchor ($url, htmlspecialchars($f['name']));
+				print anchor (
+					"source/folder/{$project->id}/{$hexpath}{$revreq}",
+					htmlspecialchars($f['name']));
 				print '</td>';
 				print '<td>';
 				print $f['created_rev'];
@@ -116,19 +142,22 @@ if ($folder != '')
 				print '<td>';
 				print htmlspecialchars($f['last_author']);
 				print '</td>';
-				print '<td>';
+				print '<td><code>';
 				print date('r', $f['time_t']);
-				print '</td>';
+				print '</code></td>';
+				print '<td></td>';
+				print '<td></td>';
 				print '</tr>';
 			}
 			else
 			{
 				// file
-       		         	print '<tr>';
+				$hexpath = $this->converter->AsciiToHex($fullpath);
+       		         	print "<tr class='{$rowclass}'>";
 				print '<td>';
-				$url = 'source/file/' . $project->id . '/' . 
-					$this->converter->AsciiToHex($fullpath);
-				print anchor ($url, htmlspecialchars($f['name']));
+				print anchor (
+					"source/file/{$project->id}/{$hexpath}{$revreq}",
+					htmlspecialchars($f['name']));
 				print '</td>';
 				print '<td>';
 				print $f['created_rev'];
@@ -139,13 +168,25 @@ if ($folder != '')
 				print '<td>';
 				print htmlspecialchars($f['last_author']);
 				print '</td>';
-				print '<td>';
+				print '<td><code>';
 				print date('r', $f['time_t']);
+				print '</code></td>';
+
+				print '<td>';
+				print anchor (
+					"source/blame/{$project->id}/{$hexpath}{$revreq}",
+					$this->lang->line('Blame'));
+				print '</td>';
+				print '<td>';
+				print anchor (
+					"source/diff/{$project->id}/{$hexpath}{$revreq}",
+					$this->lang->line('Difference'));
 				print '</td>';
 				print '</tr>';
 			}
 		}
 		print '</table>';
+		print '</div>';
 	}
 ?>
 
diff --git a/codepot/src/codepot/views/source_history.php b/codepot/src/codepot/views/source_history.php
index 7dfb2ac6..ce012004 100644
--- a/codepot/src/codepot/views/source_history.php
+++ b/codepot/src/codepot/views/source_history.php
@@ -66,19 +66,22 @@ if ($type == 'file')
 {
 	$par = $folder;
 	$par = $this->converter->AsciiTohex ($par);
-	$xpar = 'source/file/' . $project->id . '/' . $par;
+	$xpar = "source/file/{$project->id}/{$par}";
 	print anchor ($xpar, $this->lang->line('Details'));
 	print ' | ';
-	$xpar = 'source/blame/' . $project->id . '/' . $par;
+	$xpar = "source/blame/{$project->id}/{$par}";
 	print anchor ($xpar, $this->lang->line('Blame'));
+	print ' | ';
+	$xpar = "source/diff/{$project->id}/{$par}";
+	print anchor ($xpar, $this->lang->line('Difference'));
 }
 ?>
 </div> <!-- project_source_history_mainarea_menu -->
 
 
-<div id="project_source_history_mainarea_body">
-<table>
-<tr>
+<div id="project_source_history_mainarea_result">
+<table id="project_source_history_mainarea_result_table">
+<tr class='heading'>
 	<th><?=$this->lang->line('Revision')?></th>
 	<th><?=$this->lang->line('Author')?></th>
 	<th><?=$this->lang->line('Time')?></th>
@@ -86,26 +89,28 @@ if ($type == 'file')
 	<th><?=$this->lang->line('Files')?></th>
 </tr>
 <?php 
+	$rowclasses = array ('even', 'odd');
 	$history = $file['history'];
 	$history_count = count($history);	
 	for ($i = $history_count; $i > 0; )
 	{
 		$h = $history[--$i];
 
-		print '<tr>';
+		$rowclass = $rowclasses[($history_count - $i) % 2];
+		print "<tr class='{$rowclass}'>";
 
 		print '<td>';
 		$hexfolder = $this->converter->AsciiToHex(($folder == '')? '.': $folder);
-		print anchor ("/source/$type/" . $project->id . '/' . $hexfolder . '/' . $h['rev'], $h['rev']);
+		print anchor ("/source/$type/{$project->id}/{$hexfolder}/{$h['rev']}", $h['rev']);
 		print '</td>';
 
 		print '<td>';
 		print htmlspecialchars($h['author']);
 		print '</td>';
 
-		print '<td>';
+		print '<td><code>';
 		print date('r', strtotime($h['date']));
-		print '</td>';
+		print '</code></td>';
 
 		print '<td>';
 		print htmlspecialchars($h['msg']);
@@ -115,15 +120,19 @@ if ($type == 'file')
 		if (count($paths) > 0)
 		{
 			print '<td>';
+			print '<ul id="project_source_history_mainarea_result_table_path_list">';
 			foreach ($paths as $p)
 			{
 				print '<li>';
+				print '<code>';
 				print '[';
 				print $p['action'];
 				print '] ';
 				print_path ($project, $p['path'], 'file', $this->converter, $h['rev']);
+				print '</code>';
 				print '</li>';
 			}
+			print '</ul>';
 			print '</td>';
 		}
 
diff --git a/codepot/src/config.php.in b/codepot/src/config.php.in
index 1264c30e..9344d928 100644
--- a/codepot/src/config.php.in
+++ b/codepot/src/config.php.in
@@ -50,10 +50,28 @@ function load_ini ($file)
 		if (array_key_exists ($idx, $cfg))
 		{
 			$rawval = $cfg[$idx];
-			if ($x[1] == 'string') define ($const, $rawval);
-			else if ($x[1] == 'boolean') define ($const, strcasecmp ($rawval, 'yes') == 0); 
-			else if ($x[1] == 'integer') define ($const, intval ($rawval));
-			else define ($const, $x[2]);
+			if ($x[1] == 'string') 
+			{
+				define ($const, $rawval);
+			}
+			else if ($x[1] == 'boolean') 
+			{
+				if (is_bool($rawval))
+					define ($const, $rawval);
+				else if (is_numeric($rawval) === TRUE)
+					define ($const, $rawval != 0);
+				else
+					define ($const, strcasecmp ($rawval, 'yes') == 0); 
+			}
+			else if ($x[1] == 'integer') 
+			{
+				define ($const, intval ($rawval));
+			}
+			else 
+			{
+				// set the default value
+				define ($const, $x[2]);
+			}
 		}
 		else define ($const, $x[2]);
 	}
diff --git a/codepot/src/css/Makefile.am b/codepot/src/css/Makefile.am
index 2580e954..4f77d85f 100644
--- a/codepot/src/css/Makefile.am
+++ b/codepot/src/css/Makefile.am
@@ -3,7 +3,8 @@ SUBDIRS =  images
 wwwdir=$(WWWDIR)/css
 www_DATA =  \
 	common.css \
-	project.css
+	project.css \
+	websvn.css
 
 EXTRA_DIST = $(www_DATA)
 
diff --git a/codepot/src/css/Makefile.in b/codepot/src/css/Makefile.in
index f03e0997..1d8c53da 100644
--- a/codepot/src/css/Makefile.in
+++ b/codepot/src/css/Makefile.in
@@ -205,7 +205,8 @@ wwwdir = $(WWWDIR)/css
 SUBDIRS = images
 www_DATA = \
 	common.css \
-	project.css
+	project.css \
+	websvn.css
 
 EXTRA_DIST = $(www_DATA)
 all: all-recursive
diff --git a/codepot/src/css/common.css b/codepot/src/css/common.css
index 5adcc812..f9a3266a 100644
--- a/codepot/src/css/common.css
+++ b/codepot/src/css/common.css
@@ -1,12 +1,10 @@
-ody {
-	//margin: 0;
+body {
 	padding: 0;
 	margin: 5px 5px 5px 5px;
 }
 
 .content
 {
-	//margin: 2px 2px 2px 2px;
 	font-size: 90%;
 	font-family: sans-serif;
 }
@@ -178,109 +176,76 @@ ody {
 	border: 1px solid #BBCCDD;
 }
 
-.content .mainarea table {
-	border-collapse:collapse;
-	border-bottom: 2px solid #BBCCDD;
-	margin-top: 0.5em;
-	margin-bottom: 0.5em;
-}
-
 .content .mainarea .icon {
 	border: 0;
 }
 
-.content .mainarea table th {
-        color:#FFFFFF;
-        background-color: #7777FF;
-	font-weight: normal;
+.content .mainarea pre {
+        padding: .3em .3em .3em .3em;
+	border: 1px dashed #BBCCDD;
+	background-color: #F1F1FF;
+	overflow: auto;
+	width: inherit;
+}
+
+.content .mainarea tt {
+	padding: .1em .1em .1em .1em;
+	background-color: #F1F1FF;
+}
+
+.content .mainarea tt:hover {
+	background-color: inherit;
+}
+
+.content .mainarea table {
+	font-size: inherit;
+	background-color: inherit;
+}
+
+.content .mainarea table tr.heading {
+	color: #FFFFFF;
+	background-color: #7777FF;
+}
+
+.content .mainarea table tr.heading a {
+	color: inherit;
+	background-color: inherit;
+	text-decoration: none;
+}
+
+.content .mainarea table tr.odd {
+	background-color: inherit;
+}
+
+.content .mainarea table tr.even {
+	background-color: #EEEEFF;
+}
+
+.content .mainarea table tr th {
 	white-space: nowrap;
 }
 
-.content .mainarea table tr:hover {
-	background-color: #BBCCFF;
-}
-
-.content .mainarea table td {
+.content .mainarea table tr td {
 	padding-left: 0.2em;
 	padding-right: 0.2em;
 }
 
-.content .mainarea table td img {
+.content .mainarea table tr td img {
 	vertical-align: middle;
 	display:inline-block;
 }
 
-.content .mainarea pre,
-.content .mainarea tt,
-.content .mainarea .codebox {
-        padding: .3em .3em .3em .3em;
-	border: 1px dashed #BBCCDD;
-	background-color: #F1F1FF;
-}
-
-.content .mainarea .codebox pre,
-.content .mainarea .codebox tt {
-	padding: 0;
-	border: 0;
-}
-
-.content .mainarea table td.code {
+.content .mainarea table tr td.code {
 	white-space: nowarp;
 }
 
-.content .mainarea table td.code pre {
+.content .mainarea table tr td.code pre {
 	padding: 0;
 	margin: 0;
-}
-
-.content .mainarea table td.code pre {
-	padding: 0;
 	border: 0 none;	
 	background-color: inherit;
 }
 
-.content .mainarea table tbody tr.diffcode td.diff pre {
-	display:block;
-	height:100%;
-	margin: 0;
-	padding: 0;
-	padding-left:22px;
-	border: 0 none;
-	background-color: inherit;
-}
-
-.content .mainarea table tbody td.diffdeleted pre {
-  border:1px solid #e8d4bc;
-  background-color:#f8e4cc;
-  background-image:url(images/bullet_delete.png);
-  background-position:2px 50%;
-  background-repeat:no-repeat;
-  padding: 0;
-  padding-left:22px;
-  margin: 0;
-}
-
-.content .mainarea table tbody tr.diffcode td.diffadded pre {
-  border:1px solid #cdf0cd;
-  background-color:#ddffdd;
-  background-image:url(images/bullet_add.png);
-  background-repeat:no-repeat;
-  background-position:2px 50%;
-  padding: 0;
-  padding-left:22px;
-  margin: 0;
-}
-.content .mainarea table tbody tr.diffcode td.diffchanged pre {
-  border:1px solid #f0f0bc;
-  background-color:#ffffcc;
-  background-image:url(images/bullet_yellow.png);
-  background-repeat:no-repeat;
-  background-position:2px 50%;
-  padding: 0;
-  padding-left:22px;
-  margin: 0;
-}
-
 .content .mainarea pre.prettyprint {
 	/* anything that make prettyprint area different from other pres? */
 	background-color: #FFFFFF;
@@ -336,8 +301,19 @@ pre.prettyprint .nocode a:hover {
 	}
 }
 
+.content .infostrip {
+	font-size: 0.9em;
+        background: #E5ECF9 none repeat scroll 0 0;
+	margin: 0.3em 0em 0em 0em;
+	padding: 0.3em 0.3em 0.3em 0.3em;
+	text-align: right;
+}
+
+.content .infostrip a {
+	text-decoration: none;
+}
+
 .content .sidebar {
-        /* sidebar to show extra information holding one or more infoboxes */
 	font-size: 0.9em;
         float: right;
         width: 20em;
@@ -398,10 +374,6 @@ pre.prettyprint .nocode a:hover {
 	padding: 0.2em 0 0.2em 1em;
 }
 
-
-.content .sidebar a:hover {
-}
-
 .content .footer {
 	padding: 0.3em 0em 0.3em 0em;
 	font-size: .9em;
diff --git a/codepot/src/css/project.css b/codepot/src/css/project.css
index 4eaca2d3..2191c44e 100644
--- a/codepot/src/css/project.css
+++ b/codepot/src/css/project.css
@@ -1,5 +1,110 @@
-/* specific IDs */
+/*
+ * This file contains specific IDs for furthur customization.
+ */
 
-#project_list_mainarea {
+/*----------------------------------------------- 
+ * project source folder view 
+ *-----------------------------------------------*/
+#project_source_folder_mainarea_result {
+	overflow: auto;
+}
+
+#project_source_folder_mainarea_result_table tr {
+	vertical-align: top;
+	white-space: nowrap;
+}
+
+/*----------------------------------------------- 
+ * project source folder view 
+ *-----------------------------------------------*/
+#project_file_home_mainarea_result {
+	overflow: auto;
+}
+
+#project_file_home_mainarea_result_table tr {
+	vertical-align: top;
+	white-space: nowrap;
+}
+
+/*----------------------------------------------- 
+ * project source history view 
+ *-----------------------------------------------*/
+#project_source_history_mainarea_result {
+	overflow: auto;
+}
+
+#project_source_history_mainarea_result_table tr {
+	vertical-align: top;
+	white-space: nowrap;
+}
+
+#project_source_history_mainarea_result_table_path_list {
+	/* the list in the 'paths' column */
+	margin: 0;
+	padding: 0;
+	list-style: none;
+	white-space: nowrap;
+}
+
+/*----------------------------------------------- 
+ * project source diff view 
+ *-----------------------------------------------*/
+#project_source_diff_mainarea_result {
+	overflow: auto;
+}
+
+#project_source_diff_mainarea_result_table {
+	border: 0;
+}
+
+#project_source_diff_mainarea_result_table tr.diff td pre {
+	background-color: inherit;
+	border: 0;
+	margin: 0;
+	padding: 0;
+}
+
+#project_source_diff_mainarea_result_table tr.diff td.diff {
+	padding: 0;
+	padding-left:22px;
+	margin: 0;
+}
+
+#project_source_diff_mainarea_result_table tr.diff td.diffrow {
+	font-style: italic;
+	font-weight: bold;
+}
+
+#project_source_diff_mainarea_result_table tr.diff td.diffadded {
+	border:1px solid #cdf0cd;
+	background-color:#ddffdd;
+	background-image:url(images/bullet_add.png);
+	background-repeat:no-repeat;
+	background-position:2px 50%;
+	padding: 0;
+	padding-left:22px;
+	margin: 0;
+}
+
+#project_source_diff_mainarea_result_table tr.diff td.diffdeleted {
+	border:1px solid #e8d4bc;
+	background-color:#f8e4cc;
+	background-image:url(images/bullet_delete.png);
+	background-position:2px 50%;
+	background-repeat:no-repeat;
+	padding: 0;
+	padding-left:22px;
+	margin: 0;
+}
+
+#project_source_diff_mainarea_result_table tr.diff td.diffchanged {
+	border:1px solid #f0f0bc;
+	background-color:#ffffcc;
+	background-image:url(images/bullet_yellow.png);
+	background-repeat:no-repeat;
+	background-position:2px 50%;
+	padding: 0;
+	padding-left:22px;
+	margin: 0;
 }
 
diff --git a/codepot/src/css/websvn.css b/codepot/src/css/websvn.css
new file mode 100644
index 00000000..ec5b0679
--- /dev/null
+++ b/codepot/src/css/websvn.css
@@ -0,0 +1,90 @@
+
+/*----------------------------------------------- 
+ * websvn source folder view 
+ *-----------------------------------------------*/
+#websvn_folder_mainarea_result {
+	overflow: auto;
+}
+
+#websvn_folder_mainarea_result_table {
+	border: 0;
+	border-collapse: collapse;
+	vertical-align: top;
+}
+
+#websvn_folder_mainarea_result_table tr {
+	border: 0;
+	margin: 0;	
+	padding: 0;	
+	white-space: nowrap;
+}
+
+#websvn_folder_mainarea_result_table tr td {
+	margin: 0;	
+	padding: 0;
+	padding-left: 0.2em;
+	padding-right: 0.2em;
+}
+
+/*----------------------------------------------- 
+ * websvn source diff view 
+ *-----------------------------------------------*/
+#websvn_diff_mainarea_result {
+	overflow: auto;
+}
+
+#websvn_diff_mainarea_result_table {
+	border: 0;
+}
+
+#websvn_diff_mainarea_result_table tr.diff pre {
+	background-color: inherit;
+	border: 0;
+	margin: 0;
+	padding: 0;
+}
+
+#websvn_diff_mainarea_result_table tr.diff td.diff {
+	padding: 0;
+	padding-left:22px;
+	margin: 0;
+}
+
+#websvn_diff_mainarea_result_table tr.diff td.diffrow {
+	font-style: italic;
+	font-weight: bold;
+}
+
+#websvn_diff_mainarea_result_table tr.diff td.diffadded {
+	border:1px solid #cdf0cd;
+	background-color:#ddffdd;
+	background-image:url(images/bullet_add.png);
+	background-repeat:no-repeat;
+	background-position:2px 50%;
+	padding: 0;
+	padding-left:22px;
+	margin: 0;
+}
+
+#websvn_diff_mainarea_result_table tr.diff td.diffdeleted {
+	border:1px solid #e8d4bc;
+	background-color:#f8e4cc;
+	background-image:url(images/bullet_delete.png);
+	background-position:2px 50%;
+	background-repeat:no-repeat;
+	padding: 0;
+	padding-left:22px;
+	margin: 0;
+}
+
+#websvn_diff_mainarea_result_table tr.diff td.diffchanged {
+	border:1px solid #f0f0bc;
+	background-color:#ffffcc;
+	background-image:url(images/bullet_yellow.png);
+	background-repeat:no-repeat;
+	background-position:2px 50%;
+	padding: 0;
+	padding-left:22px;
+	margin: 0;
+}
+
diff --git a/codepot/src/websvn/include/svnlook.php b/codepot/src/websvn/include/svnlook.php
index b6e02f18..11395024 100644
--- a/codepot/src/websvn/include/svnlook.php
+++ b/codepot/src/websvn/include/svnlook.php
@@ -549,7 +549,7 @@ class SVNRepository {
       @exec($cmd);
 
       // Get the file as a string (memory hogging, but we have no other options)
-      $content = highlight_file($filename, true);
+      $content = '<PRE>' . highlight_file($filename, true) . '</PRE>';
 
       // Destroy the previous version, and replace it with the highlighted version
       $f = fopen($filename, "w");
@@ -664,7 +664,9 @@ class SVNRepository {
       @exec($cmd);
       $tmpStr = file_get_contents($tmp);
       $tmpStr = str_replace(array("\r\n"), array("\n"), $tmpStr);
+      print '<PRE>';
       highlight_string($tmpStr);
+      print '</PRE>';
       @unlink($tmp);
     } else if ($l !== null && $config->useGeshi) {
       $tmp = tempnam("temp", "wsvn");
diff --git a/codepot/src/websvn/templates/calm/diff.tmpl b/codepot/src/websvn/templates/calm/diff.tmpl
index f4db299f..88b61146 100755
--- a/codepot/src/websvn/templates/calm/diff.tmpl
+++ b/codepot/src/websvn/templates/calm/diff.tmpl
@@ -26,7 +26,7 @@
 	</div>
 </div>
 
-<div class="mainarea">
+<div class="mainarea" id="websvn_diff_mainarea">
 
 [websvn-test:noaccess]
    [lang:NOACCESS]
@@ -49,26 +49,26 @@
 	[websvn:fileviewloglink] 
 </div> <!-- menu -->
 
-<div id="result">
+<div id="websvn_diff_mainarea_result">
 
 [websvn-test:noprev]
 	[lang:NOPREVREV]
 [websvn-else]
 
-   <table>
-      <tr>
+   <table id="websvn_diff_mainarea_result_table">
+      <tr class="heading">
          <th>[lang:REV] [websvn:rev2]</th>
          <th>[lang:REV] [websvn:rev1]</th>
       </tr>
 
     [websvn-startlisting]
     [websvn-test:rev1lineno]
-      <tr class="diffcode">
-        <td class="row1"><strong>[lang:LINE] [websvn:rev1lineno]...</strong></td>
-        <td class="row1"><strong>[lang:LINE] [websvn:rev2lineno]...</strong></td>
+      <tr class="diff">
+        <td class="diffrow"><strong>[lang:LINE] [websvn:rev1lineno]...</strong></td>
+        <td class="diffrow"><strong>[lang:LINE] [websvn:rev2lineno]...</strong></td>
       </tr>
       [websvn-else]
-      <tr class="diffcode">
+      <tr class="diff">
         <td class="[websvn:rev1diffclass]"><pre>[websvn:rev1line]</pre></td>
         <td class="[websvn:rev2diffclass]"><pre>[websvn:rev2line]</pre></td>
       </tr>
diff --git a/codepot/src/websvn/templates/calm/directory.tmpl b/codepot/src/websvn/templates/calm/directory.tmpl
index 0a7b836e..69ff71e4 100755
--- a/codepot/src/websvn/templates/calm/directory.tmpl
+++ b/codepot/src/websvn/templates/calm/directory.tmpl
@@ -62,7 +62,7 @@
 [websvn-endtest]
 </div> <!-- menu -->
 
-<div id="body">
+<div id="websvn_folder_mainarea_result">
 
 [websvn-defineicons]
 dir=<img src="[websvn:locwebsvnhttp]/templates/calm/images/folder.png" alt="[FOLDER]" class="icon" />
@@ -92,9 +92,9 @@ e-node=<img src="[websvn:locwebsvnhttp]/templates/calm/images/e-node.png" alt="[
 [websvn-enddefineicons]
 
 [websvn:compare_form]
-   <table>
+   <table id="websvn_folder_mainarea_result_table">
       <thead>
-      <tr>
+      <tr class='heading'>
         <th>&nbsp;</th>
         <th>&nbsp;</th>
         <th>[lang:PATH]</th>
diff --git a/codepot/src/websvn/templates/calm/file.tmpl b/codepot/src/websvn/templates/calm/file.tmpl
index c7a865f2..80029c05 100755
--- a/codepot/src/websvn/templates/calm/file.tmpl
+++ b/codepot/src/websvn/templates/calm/file.tmpl
@@ -41,9 +41,7 @@
 		[websvn:fileviewloglink]
 	</div>
 
-	<div class="codebox">
-		[websvn-getlisting]
-	</div>
+	[websvn-getlisting]
 
 [websvn-endtest]
 
diff --git a/codepot/src/websvn/templates/calm/header.tmpl b/codepot/src/websvn/templates/calm/header.tmpl
index 9a705aad..92893657 100755
--- a/codepot/src/websvn/templates/calm/header.tmpl
+++ b/codepot/src/websvn/templates/calm/header.tmpl
@@ -6,6 +6,7 @@
     <link rel="shortcut icon" type="image/x-icon" href="[websvn:locwebsvnhttp]/templates/calm/images/favicon.ico" />
 
     <link type="text/css" href="[websvn:loccodepothttp]/css/common.css" rel="stylesheet" />
+    <link type="text/css" href="[websvn:loccodepothttp]/css/websvn.css" rel="stylesheet" />
 
     [websvn-test:rssurl]
     <link rel='alternate' type='application/rss+xml' title='WebSVN RSS' href='[websvn:rssurl]' />