diff --git a/bibtexbrowser.php b/bibtexbrowser.php
index 333160b..ae6a88e 100644
--- a/bibtexbrowser.php
+++ b/bibtexbrowser.php
@@ -1,5 +1,5 @@
 <?php /* bibtexbrowser: publication lists with bibtex and PHP
-<!--this is version v20120703 -->
+<!--this is version v20121027 -->
 URL: http://www.monperrus.net/martin/bibtexbrowser/ 
 Feedback & Bug Reports: martin.monperrus@gmail.com
 
@@ -16,13 +16,15 @@ License, or (at your option) any later version.
 // added on Wednesday, June 01 2011, bug found by Carlos Bras
 if (!defined('BIBTEXBROWSER')) {
 // this if block ends at the very end of this file, after all class and function declarations.
-define('BIBTEXBROWSER','v20120703');
+define('BIBTEXBROWSER','v20121027');
 
 
 // *************** CONFIGURATION
 // I recommend to put your changes in bibtexbrowser.local.php
 // it will help you to upgrade the script with a new version
-@include(dirname(__FILE__).'/bibtexbrowser.local.php');
+// the changes that require existing bibtexbrowser symbols should be in bibtexbrowser.after.php (included at the end of this file)
+@include(preg_replace('/\.php$/','.local.php',__FILE__));
+
 // there is no encoding transformation from the bibtex file to the html file
 // if your bibtex file contains 8 bits characters in utf-8
 // change the following parameter
@@ -54,6 +56,10 @@ define('BIBTEXBROWSER','v20120703');
 
 // Wrapper to use when we are included by another script 
 @define('BIBTEXBROWSER_EMBEDDED_WRAPPER', 'NoWrapper');
+
+// Wrapper to use when we are included by another script 
+@define('BIBTEXBROWSER_MAIN', 'Dispatcher');
+
 // default order functions
 @define('ORDER_FUNCTION','compare_bib_entry_by_year_and_month');
 // can be @define('ORDER_FUNCTION','compare_bib_entry_by_title');
@@ -82,7 +88,7 @@ define('BIBTEXBROWSER','v20120703');
 @define('Q_AUTHOR_PAGE', 'author_page');
 @define('Q_TAG', 'keywords');
 @define('Q_TAG_PAGE', 'keywords_page');
-@define('Q_TYPE', 'type');
+@define('Q_TYPE', 'type');// used for queries
 @define('Q_TYPE_PAGE', 'type_page');
 @define('Q_ALL', 'all');
 @define('Q_ENTRY', 'entry');
@@ -113,6 +119,9 @@ define('BIBTEXBROWSER','v20120703');
 
 // *************** END CONFIGURATION
 
+define('Q_INNER_AUTHOR', '_author');// internally used for representing the author
+define('Q_INNER_TYPE', 'x-bibtex-type');// used for representing the type of the bibtex entry internally
+
 // for clean search engine links
 // we disable url rewriting
 // ... and hope that your php configuration will accept one of these
@@ -218,7 +227,8 @@ function _zetDB($bibtex_filenames) {
   // we try to save a "compiled" in a txt file
   $compiledbib = 'bibtexbrowser_'.md5($bibtex_filenames).'.dat';
 
-  $parse=false;
+  $parse=filemtime(__FILE__)>filemtime($compiledbib);
+  
   foreach(explode(MULTIPLE_BIB_SEPARATOR, $bibtex_filenames) as $bib) {
   // do we have a compiled version ?
   if (is_file($compiledbib) 
@@ -699,13 +709,18 @@ class BibDBBuilder {
     // we add a timestamp
     $this->currentEntry->setTimestamp();
     
+    // we add a key if there is no key
+    if (!$this->currentEntry->hasField(Q_KEY)) {
+      $this->currentEntry->setField(Q_KEY,md5($this->currentEntry->getTitle().implode('',$this->currentEntry->getRawAuthors())));
+    }
+    
     // we set the fulltext
     $this->currentEntry->text = $entrysource;
     
     // we format the author names in a special field
     // to enable search
     if ($this->currentEntry->hasField('author')) {
-      $this->currentEntry->setField('_author',$this->currentEntry->getFormattedAuthorsImproved());
+      $this->currentEntry->setField(Q_INNER_AUTHOR,$this->currentEntry->getFormattedAuthorsImproved());
     }
 
     // ignoring jabref comments
@@ -716,7 +731,7 @@ class BibDBBuilder {
     // we add it to the string database
     else if ($this->currentEntry->getType()=='string') {
       foreach($this->currentEntry->fields as $k => $v) {
-        $k!='type' and $this->stringdb[$k]=$v;
+        $k!=Q_INNER_TYPE and $this->stringdb[$k]=$v;
       }
     } 
     
@@ -913,12 +928,12 @@ class BibEntry {
   /** Returns the type of this bib entry. */
   function getType() {
     // strtolower is important to be case-insensitive
-    return strtolower($this->getField(Q_TYPE));
+    return strtolower($this->getField(Q_INNER_TYPE));
   }
 
   /** Sets the key of this bib entry. */
   function setKey($value) {
-    $this->setField('key',$value);
+    $this->setField(Q_KEY,$value);
   }
 
   /** Sets a field of this bib entry. */
@@ -944,7 +959,7 @@ class BibEntry {
     // to support space e.g. "@article  {"
     // as generated by ams.org
     // thanks to Jacob Kellner 
-    $this->fields[Q_TYPE] =trim($value);
+    $this->fields[Q_INNER_TYPE] =trim($value);
   }
   
   function setIndex($index) { $this->index = $index; }
@@ -957,7 +972,7 @@ class BibEntry {
     }
 //     echo $this->filename;
 //     echo $this->getKey();
-    return BIBTEXBROWSER_URL.'?'.createQueryString(array('key'=>$this->getKey(), Q_FILE=>$this->filename));
+    return BIBTEXBROWSER_URL.'?'.createQueryString(array(Q_KEY=>$this->getKey(), Q_FILE=>$this->filename));
   }
 
   /** Tries to build a good absolute URL for this entry */
@@ -1011,7 +1026,7 @@ class BibEntry {
 
   /** Returns the key of this entry */
   function getKey() {
-    return $this->getField('key');
+    return $this->getField(Q_KEY);
   }
 
   /** Returns the title of this entry? */
@@ -1081,7 +1096,7 @@ class BibEntry {
   }
 
 
-  /** Returns the authors as a string depending on the configuration parameter COMMA_NAMES  */
+  /** Returns the authors as an array of strings (one string per author) */
   function getFormattedAuthors() {
     $authors = array();
     foreach ($this->getRawAuthors() as $author) {
@@ -1130,7 +1145,7 @@ class BibEntry {
   * all author names except for the first one and appending ", et al."
   */
   function getCompactedAuthors($author){
-    $authors = $this->getAuthors();
+    $authors = $this->getRawAuthors();
     $etal = count($authors) > 1 ? ', et al.' : '';
     return $this->formatAuthor($authors[0]) . $etal;
   }
@@ -1225,7 +1240,7 @@ class BibEntry {
     return $this->text;
   }
  
-  /** Returns true if this bib entry contains the given phrase
+  /** Returns true if this bib entry contains the given phrase (PREG regexp)
    * in the given field. if $field is null, all fields are considered.
    * Note that this method is NOT case sensitive */
   function hasPhrase($phrase, $field = null) {
@@ -1484,13 +1499,18 @@ return
   array(
   // Books
     array(
-      'query' => array(Q_TYPE=>'book'),
+      'query' => array(Q_TYPE=>'book|proceedings'),
       'title' => 'Books'
     ),
+  // Book chapters
+    array(
+      'query' => array(Q_TYPE=>'incollection|inbook'),
+      'title' => 'Book Chapters'
+    ),
   // Journal / Bookchapters
     array(
-      'query' => array(Q_TYPE=>'article|incollection'),
-      'title' => 'Refereed Articles and Book Chapters'
+      'query' => array(Q_TYPE=>'article'),
+      'title' => 'Refereed Articles'
     ),
   // conference papers
     array(
@@ -1730,7 +1750,9 @@ function createQueryString($array_param) {
   }
  // then a simple transformation and implode
  foreach ($array_param as $key => $val) {
-      if($key == '_author') { $key = 'author'; }
+      // the inverse transformation should also be implemented into query2title
+      if($key == Q_INNER_AUTHOR) { $key = Q_AUTHOR; }
+      if($key == Q_INNER_TYPE) { $key = Q_TYPE; }
       $array_param[$key]=$key .'='. urlencode($val);
  }
  return implode("&amp;",$array_param);
@@ -1800,7 +1822,7 @@ class IndependentYearMenu  {
 function poweredby() {
   $poweredby = "\n".'<div style="text-align:right;font-size: xx-small;opacity: 0.6;" class="poweredby">';
   $poweredby .= '<!-- If you like bibtexbrowser, thanks to keep the link :-) -->';
-  $poweredby .= 'Powered by <a href="http://www.monperrus.net/martin/bibtexbrowser/">bibtexbrowser</a><!--v20120703-->';
+  $poweredby .= 'Powered by <a href="http://www.monperrus.net/martin/bibtexbrowser/">bibtexbrowser</a><!--v20121027-->';
   $poweredby .= '</div>'."\n";
   return $poweredby;
   }
@@ -1920,14 +1942,14 @@ class MenuManager {
     foreach ($this->db->getTypes() as $type) {
       $types[$type] = $type;
     }
-    $types[''] = 'all types';
+    $types['.*'] = 'all types';
     // retreive or calculate page number to display
     if (isset($_GET[Q_TYPE_PAGE])) {
       $page = $_GET[Q_TYPE_PAGE];
     }
     else $page = 1;
 
-    $this->displayMenu('Types', $types, $page, $this->type_size, Q_TYPE_PAGE, Q_TYPE);
+    $this->displayMenu('Types', $types, $page, $this->type_size, Q_TYPE_PAGE, Q_INNER_TYPE);
   }
 
   /** Displays and controls the authors menu in a table. */
@@ -2055,7 +2077,7 @@ else $page = 1;
    * the end index (exclusive). For each menu, the following form of
    * string is printed:
    *
-   * <a href="...?bib=cheon.bib&search_author=Yoonsik+Cheon">
+   * <a href="...?bib=cheon.bib&author=Yoonsik+Cheon">
    *    Cheon, Yoonsik</a>
    * <div class="mini_se"></div>
    */
@@ -2072,12 +2094,18 @@ else $page = 1;
   }
 }
 
+if (!function_exists('query2title')) {
 /** transforms an array representing a query into a formatted string */
 function query2title(&$query) {
     $headers = array();
     foreach($query as $k=>$v) {
-      if($k == '_author') { $k = 'author'; }
-      if($k == 'type') { $v = substr($v,1,strlen($v)-2); }
+      if($k == Q_INNER_AUTHOR) { $k = 'author'; }
+      if($k == Q_INNER_TYPE) {
+        // we changed from x-bibtex-type to type
+        $k = 'type'; 
+        // and we remove the regexp modifiers ^ $
+        $v = preg_replace('/[$^]/','',$v); 
+      }
       $headers[$k] = ucwords($k).': '.ucwords($v);
   }
     // special cases
@@ -2085,7 +2113,7 @@ function query2title(&$query) {
     if (isset($headers[Q_AUTHOR])) $headers[Q_AUTHOR] = 'Publications of '.$_GET[Q_AUTHOR];
     return join(' &amp; ',$headers);
 }
-
+}
 
 /** displays the latest modified bibtex entries.
 usage:
@@ -2297,11 +2325,12 @@ class AcademicDisplay  {
   }
 
   /** transforms a query to HTML 
-   * $ query is an array (e.g. array(Q_TYPE=>'book'))
+   * $ query is an array (e.g. array(Q_YEAR=>'2005'))
    * $title is a string, the title of the section
    */
   function search2html($query, $title) {
     $entries = $this->db->multisearch($query);
+    
     uasort($entries, ORDER_FUNCTION);
     if (count($entries)>0) {
     echo "\n".'<div class="btb-header">'.$title.'</div>'."\n";
@@ -2768,6 +2797,7 @@ class BibDataBase {
     foreach ($this->bibdb as $bib) {
         $entryisselected = true;
         foreach ($query as $field => $fragment) {
+          $field = strtolower($field);
           if ($field==Q_SEARCH) {
             // we search in the whole bib entry
             if (!$bib->hasPhrase($fragment)) {
@@ -2779,6 +2809,16 @@ class BibDataBase {
               $entryisselected = false;
             }
           }
+          else if ($field==Q_TYPE || $field==Q_INNER_TYPE) {
+            // types are always exact search
+            // remarks Ken
+            // type:"book" should only select book (and not inbook, book, bookchapter)
+            // this was before in Dispatch:type()
+            // moved here so that it is also used by AcademicDisplay:search2html()
+            if (!$bib->hasPhrase('^('.$fragment.')$', Q_INNER_TYPE))  {
+              $entryisselected = false;
+            }
+          }
           else {
             if (!$bib->hasPhrase($fragment, $field))  {
               $entryisselected = false;
@@ -2898,10 +2938,12 @@ function bibtexbrowserDefaultCSS() {
   font-family: monospace;
   font-size: small;
   border: 1px solid #DDDDDD;
-  white-space:pre;
   background: none repeat scroll 0 0 #F5F5F5;  
   padding:10px;
+  
   overflow:auto;
+  width:600px;
+  
   clear:both;
 }
 .bibentry-by { font-style: italic; }
@@ -2941,7 +2983,7 @@ echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=<?php echo ENCODING ?>"/>
-<meta name="generator" content="bibtexbrowser v20120703" />
+<meta name="generator" content="bibtexbrowser v20121027" />
 <?php 
 // if ($content->getRSS()!='') echo '<link rel="alternate" type="application/rss+xml" title="RSS" href="'.$content->getRSS().'&amp;rss" />'; 
 ?>
@@ -3203,7 +3245,7 @@ class RSSDisplay {
       <link>http://<?php echo $_SERVER['HTTP_HOST'].htmlentities($_SERVER['REQUEST_URI']);?></link>
       <atom:link href="http://<?php echo $_SERVER['HTTP_HOST'].htmlentities($_SERVER['REQUEST_URI']);?>" rel="self" type="application/rss+xml" />
       <description></description>
-      <generator>bibtexbrowser v20120703</generator>
+      <generator>bibtexbrowser v20121027</generator>
 
 <?php
       foreach($this->entries as $bibentry) {
@@ -3239,7 +3281,8 @@ usage:
   // simulating ?bib=metrics.bib&year=2009
   $_GET['bib']='metrics.bib';
   $_GET['year']='2006';
-  new Dispatcher();
+  $x = new Dispatcher();
+  $x->main();
 </pre>
 */
 class Dispatcher {
@@ -3257,7 +3300,9 @@ class Dispatcher {
     */
   var $wrapper = 'HTMLWrapper';
 
-  function Dispatcher() {
+  function Dispatcher() {}
+  
+  function main() {  
     // are we in test mode, or libray mode
     // then this file is just a library
     if (isset($_GET['test']) || isset($_GET['library'])) {
@@ -3268,7 +3313,7 @@ class Dispatcher {
     }
     
     // first we set the database (load from disk or parse the bibtex file)
-    setDB();
+    if (!isset($_GET[Q_DB])) { setDB(); }
     
     // is the publication list included in another page?
     // strtr is used for Windows where __FILE__ contains C:\toto and SCRIPT_FILENAME contains C:/toto (bug reported by Marco)
@@ -3302,6 +3347,7 @@ class Dispatcher {
        
        //echo '<pre>';print_r($selectedEntries);echo '</pre>';
        
+       
        if ($this->displayer=='') {
          $this->displayer = BIBTEXBROWSER_DEFAULT_DISPLAY;
        }
@@ -3309,13 +3355,14 @@ class Dispatcher {
 
     // do we have a displayer?
     if ($this->displayer!='') {
-    
+
       $options = array();
       if (isset($_GET['dopt'])) {
         $options = json_decode($_GET['dopt'],true);
       }     
        
       // required for PHP4 to have this intermediate variable
+      
       $x = new $this->displayer();
       
       if (method_exists($x,'setEntries')) {
@@ -3330,10 +3377,6 @@ class Dispatcher {
         $x->setQuery($this->query);
       }
 
-      if (method_exists($x,'setWrapper')) {
-        $x->setWrapper($this);
-      }
-
       // should call method display() on $x
       new $this->wrapper($x);
       
@@ -3397,17 +3440,12 @@ class Dispatcher {
 
   function author() {    
     // Friday, October 29 2010
-    // changed fomr 'author' to '_author'
-    // because '_author' is already formatted
-    // doing so we can search at the same time "Joe Dupont" an "Dupont, Joe"
-    $this->query['_author']=$_GET[Q_AUTHOR];
+    // changed from 'author' to '_author'
+    // in order to search at the same time "Joe Dupont" an "Dupont, Joe"
+    $this->query[Q_INNER_AUTHOR]=$_GET[Q_AUTHOR];
   }
 
   function type() { 
-    // remarks KEN
-    // "book" selects inbook, book, bookchapter
-    // so we add the regexp modifiers
-    if (strlen($_GET[Q_TYPE])>0 && !preg_match('/^\^.*\$$/',$_GET[Q_TYPE])) { $_GET[Q_TYPE] = '^'.$_GET[Q_TYPE].'$'; }
     $this->query[Q_TYPE]= $_GET[Q_TYPE];
   }
 
@@ -3461,7 +3499,7 @@ class Dispatcher {
   function diagnosis() {
     header('Content-type: text/plain');
     echo "php version: ".phpversion()."\n";
-    echo "bibtexbrowser version: 20120703\n";
+    echo "bibtexbrowser version: 20121027\n";
     echo "dir: ".decoct(fileperms(dirname(__FILE__)))."\n";
     echo "bibtex file: ".decoct(fileperms($_GET[Q_FILE]))."\n";
     exit;
@@ -3473,7 +3511,7 @@ class Dispatcher {
     <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
     <html  xmlns="http://www.w3.org/1999/xhtml">
     <head>
-    <meta name="generator" content="bibtexbrowser v20120703" />
+    <meta name="generator" content="bibtexbrowser v20121027" />
     <meta http-equiv="Content-Type" content="text/html; charset=<?php echo ENCODING ?>"/>
     <title>You are browsing <?php echo $_GET[Q_FILE]; ?> with bibtexbrowser</title>
     </head>
@@ -3491,6 +3529,8 @@ class Dispatcher {
 
 } // end if (!defined('BIBTEXBROWSER'))
 
-new Dispatcher();
-
+@include(preg_replace('/\.php$/','.after.php',__FILE__));
+$class = BIBTEXBROWSER_MAIN;// extension point
+$main = new $class();
+$main->main();
 ?>
\ No newline at end of file