Add first Asia trip blends talk (fork of Vietnam trip blends talk.

6 files changed, 1531 insertions, 0 deletions

diff --git a/blends/talk.mdwn b/blends/talk.mdwn
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+# Talks about Debian Pure Blends
+
+[[!tag talk]]
+
+## Talks presented during Asia trip, fall 2011
+
+ * [Khammam]
diff --git a/blends/talk/Makefile b/blends/talk/Makefile
new file mode 100644
index 0000000..e37108e
--- /dev/null
+++ b/blends/talk/Makefile
@@ -0,0 +1,11 @@
+pandoc_sources := $(wildcard *.mkd)
+presentations = $(pandoc_sources:%.mkd=%/index.html)
+#aux = slidy.css
+
+all: $(presentations)
+
+# TODO: use --offline when working with Debian packaging of Pandoc
+$(presentations): %/index.html : %.mkd
+	mkdir -p $(dir $@)
+	pandoc --from Markdown --to Slidy -o $@ -s $<
+	perl -i -pe 's{http://www.w3.org/Talks/Tools/Slidy2/(?:styles|scripts)/(slidy.(?:css|js))(?:\.gz)?}{../$$1}g' $@
diff --git a/blends/talk/khammam.mkd b/blends/talk/khammam.mkd
new file mode 100644
index 0000000..cc7dc14
--- /dev/null
+++ b/blends/talk/khammam.mkd
@@ -0,0 +1,272 @@
+% Debian Pure Blends
+% Jonas Smedegaard
+% Khammam, October 20th, 2011
+
+# Overview
+
+  * Debian is generic - Blends are specific
+  * Purity: all is Debian
+  * Why bother?
+  * Technical details
+  * Team, community, users
+  * Future
+
+# Debian - the universal Operating System
+
+  * Stable
+  * Flexible
+
+Debian is the universal Operating System.
+
+Goal
+  : Usable everywhere
+
+# Debian - very flexible...
+
+> * Flexible: good
+  * Very flexible: very good
+
+# Debian - **too** flexible!
+
+  * Flexible: good
+  * ~~Very flexible: very good~~
+  * Very flexible: very confusing!
+
+Debian is too flexible: confusing and to some even scary!
+
+# Debian - ways to simplify
+
+  1. Keep things as-is - educate users instead
+  1. Remove choice
+  1. Provide multiple defaults
+
+# Debian - simple if generic defaults are ok
+
+  * Mainstream (but not too new) hardware
+  * GNOME desktop
+  * Iceweasel web browser
+  * Exim MTA
+  * Apache web server
+  * MySQL database server
+
+Debian *is* simple - if you happen to like its defaults.
+
+# Debian Pure Blend - Debian for a specific purpose
+
+Debian Pure Blend (in short DDD): a subset of Debian configured to
+support a particular target group out-of-the-box.
+
+Goal 1
+  : Turn Debian into the distribution of choice for a specific target
+    group
+Goal 2
+  : Advertise this fact to the world to attract users and developers
+
+# Debian Pure Blend - technical parts
+
+  * package selection(s)
+  * customizations
+
+The concrete work to include as packages with official Debian.
+
+# Debian Pure Blend - reality parts
+
+  * goals & noise about progress
+  * package health + encourage additional software packaging
+  * passion & patience
+  * good relations with Debian package maintainers, competitors, and upstream authors
+  * good relations with users
+
+Surrounding work making a Blend relevant.
+
+# Debian Pure Blend - current blending projects
+
+  * Debian Jr
+  * Debian Med
+  * Debian Edu
+  * Debian Science
+  * Debian EzGo
+  * BrDesktop
+  * Debian Accessibility
+  * Debian Lex
+  * DebiChem
+  * Debian GIS
+  * Debian Multimedia
+
+Projects working on Blends - some pure, some not (yet)...
+
+# Debian Pure Blends - all Debian
+
+  * **D**ebian packages - selections (e.g. for tasksel to pick up)
+  * **D**ebian configuration - use of policy-compliant package-provided interfaces
+  * **D**ebian distribution media - installing via Debian itself
+
+DDD
+  : **Debian** packages **Debian** configured from **Debian** distribution
+
+# Debian Pure Blends - why bother?
+
+Nice on paper with ideals and priciples, but...
+
+What's in it for me?!?
+
+# Debian Pure Blends - downsides
+
+  * **annoying** - Debian package maintainers may not like proposed changes
+  * **slow** - stable distribution is released infrequently
+  * **rigid** - all contributions must match Debian Free Software Guidelines
+  * **complex** - packages must obey Debian Policy
+
+# Debian Pure Blends - Benefits
+
+  * backed by Debian - help, bug tracking, translations, etc.
+  * teamwork - others might help you refine and maintain your setups
+  * common structures - others might take over if you loose interest
+
+# Tech - Debian support overloading choices
+
+  * Debian installer
+  * tasksel
+  * debconf
+  * aptitude
+
+# Tech - examples of non-pure blending
+
+  * include non-Debian packages or non-packaged stuff
+  * include Debian packages from different Debian suite
+  * configure system other than via Debian package installation
+  * install using non-Debian media
+
+You don't own your system - you provide one for others to own.
+
+So don't refine it like a (sloppy) user: Handle it like a Debian developer!
+
+# Tech - Debian, generic setup
+
+  * select package profile(s)
+  * install
+
+# Tech - Debian, hand-tuned
+
+  * select package profile(s)
+  * select additional packages
+  * install
+  * (re)configure packages
+
+# Tech - Debian, auto-tuned
+
+  * pre-seed package selection
+  * pre-seed package configurations
+  * install
+  * (re)configure non-debconf packages
+
+# Tech - Debian Pure Blend = generic
+
+  * select blend profile
+  * install
+
+# Tech - tasks involved
+
+  * extra software → into Debian officially
+  * manual configurations → preseeding
+  * maybe create temporary dirty hacks
+  * maybe use/create reusable tweaks
+  * eliminate dirty hacks and tweaks
+  * convince others in Debian to add as tasksel task
+
+# Tech - blends-dev
+
+Tool to help maintain package lists and prospective packages.
+
+Example: <http://debian-med.alioth.debian.org/tasks/psychology>
+
+# Tech - dirty tricks
+
+Avoid configuration files...
+
+  * config.d folders
+  * databases
+  * networked data
+
+# Tech - tweaks
+
+Reusable scripts compatible with one or more of...
+
+  * FAI
+  * hands-off at http://hands.com/d-i/
+  * CFengine
+  * Puppet
+
+# Tech - good style
+
+  * Aptitude
+  * debconf
+  * Config::Model
+
+# Tech - When is it "Pure"?
+
+When all is in Debian, with no dirty tricks:
+
+  * package selection(s)
+  * customizations
+  * installation
+
+# Team - getting involved
+
+  * identify and isolate tweaks at your own system
+  * register missing software - on wiki page or (better!) in Debian BTS
+  * write documentation
+  * write the dream of how things ought to work
+  * wite how details work now
+  * discuss downstream (i.e. with users and subdistros) how things work /
+    should work
+  * discuss upstream (i.e. with authors) what is possible now / soon
+
+# Team - getting involved II
+
+  * write intro for peer enthusiasts
+  * decide and document ideal formats  - translations, graphics etc.
+  * prioritize pending tasks - of various kinds to encourage many
+    different contributions
+  * document where it is ok to ask beginners' questions
+  * document if beginners can ask for a mentor
+
+# Team - getting involved III
+
+  * make illustration
+  * make screendumps
+  * make fan graphics
+  * make desktop backgrounds, CD covers, stickers, etc.
+  * Register the project as a DOAP file, and maybe at Ohloh and Freshmeat
+    etc.
+  * Register and maintain relevant Debtags
+
+# Team - getting involved IV
+
+  * Translate package descriptions
+  * Translate debconf dialogs
+  * Translate upstream code
+
+# Team - getting involved V
+
+  * Help integrate contributions from graphics artists, translators and
+    others
+  * document decision processes of the team (and Debian and upstreams?)
+  * document workflows in teams
+  * insist on transparency - not only for code!
+
+# Team - Continuous status checks
+
+  * Ask users about their needs - you will forget over time!
+  * Ask teams about their tasks - each participant has slightly different
+    perception of the common vision and status
+  * Ask upstreams about use: perhaps potentials are missed, or code or
+    persons feel as being abused
+
+# Debian Pure Blends - Future
+
+ * debconf dontcare vs. explicit choice of default option
+ * debconf query mechanism (and fill buffer from live system)
+ * APT explicit choice of alternate dependency/recommendation
+ * APT dontcare vs. explicit choice of default dependency/recommendation
+ * Config::Model - semantic configfile handling
diff --git a/blends/talk/khammam/index.html b/blends/talk/khammam/index.html
new file mode 100644
index 0000000..9a215b3
--- /dev/null
+++ b/blends/talk/khammam/index.html
@@ -0,0 +1,339 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
+<head>
+  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+  <meta name="generator" content="pandoc" />
+  <meta name="author" content="Jonas Smedegaard" />
+  <meta name="date" content="Khammam, October 20th, 2011" />
+  <link rel="stylesheet" type="text/css" media="screen, projection, print"
+    href="../slidy.css" />
+  <script src="../slidy.js"
+    charset="utf-8" type="text/javascript"></script>
+</head>
+<body>
+<div class="slide titlepage">
+  <h1 class="title">Debian Pure Blends</h1>
+  <p class="author">
+Jonas Smedegaard
+  </p>
+  <p class="date">Khammam, October 20th, 2011</p>
+</div>
+<div class="slide">
+<h1 id="overview">Overview</h1>
+<ul>
+<li>Debian is generic - Blends are specific</li>
+<li>Purity: all is Debian</li>
+<li>Why bother?</li>
+<li>Technical details</li>
+<li>Team, community, users</li>
+<li>Future</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="debian---the-universal-operating-system">Debian - the universal Operating System</h1>
+<ul>
+<li>Stable</li>
+<li>Flexible</li>
+</ul>
+<p>Debian is the universal Operating System.</p>
+<dl>
+<dt>Goal</dt>
+<dd>Usable everywhere
+</dd>
+</dl>
+</div>
+<div class="slide">
+<h1 id="debian---very-flexible...">Debian - very flexible...</h1>
+<ul class="incremental">
+<li>Flexible: good</li>
+<li>Very flexible: very good</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="debian---too-flexible">Debian - <strong>too</strong> flexible!</h1>
+<ul>
+<li>Flexible: good</li>
+<li><span style="text-decoration: line-through;">Very flexible: very good</span></li>
+<li>Very flexible: very confusing!</li>
+</ul>
+<p>Debian is too flexible: confusing and to some even scary!</p>
+</div>
+<div class="slide">
+<h1 id="debian---ways-to-simplify">Debian - ways to simplify</h1>
+<ol style="list-style-type: decimal">
+<li>Keep things as-is - educate users instead</li>
+<li>Remove choice</li>
+<li>Provide multiple defaults</li>
+</ol>
+</div>
+<div class="slide">
+<h1 id="debian---simple-if-generic-defaults-are-ok">Debian - simple if generic defaults are ok</h1>
+<ul>
+<li>Mainstream (but not too new) hardware</li>
+<li>GNOME desktop</li>
+<li>Iceweasel web browser</li>
+<li>Exim MTA</li>
+<li>Apache web server</li>
+<li>MySQL database server</li>
+</ul>
+<p>Debian <em>is</em> simple - if you happen to like its defaults.</p>
+</div>
+<div class="slide">
+<h1 id="debian-pure-blend---debian-for-a-specific-purpose">Debian Pure Blend - Debian for a specific purpose</h1>
+<p>Debian Pure Blend (in short DDD): a subset of Debian configured to support a particular target group out-of-the-box.</p>
+<dl>
+<dt>Goal 1</dt>
+<dd>Turn Debian into the distribution of choice for a specific target group
+</dd>
+<dt>Goal 2</dt>
+<dd>Advertise this fact to the world to attract users and developers
+</dd>
+</dl>
+</div>
+<div class="slide">
+<h1 id="debian-pure-blend---technical-parts">Debian Pure Blend - technical parts</h1>
+<ul>
+<li>package selection(s)</li>
+<li>customizations</li>
+</ul>
+<p>The concrete work to include as packages with official Debian.</p>
+</div>
+<div class="slide">
+<h1 id="debian-pure-blend---reality-parts">Debian Pure Blend - reality parts</h1>
+<ul>
+<li>goals &amp; noise about progress</li>
+<li>package health + encourage additional software packaging</li>
+<li>passion &amp; patience</li>
+<li>good relations with Debian package maintainers, competitors, and upstream authors</li>
+<li>good relations with users</li>
+</ul>
+<p>Surrounding work making a Blend relevant.</p>
+</div>
+<div class="slide">
+<h1 id="debian-pure-blend---current-blending-projects">Debian Pure Blend - current blending projects</h1>
+<ul>
+<li>Debian Jr</li>
+<li>Debian Med</li>
+<li>Debian Edu</li>
+<li>Debian Science</li>
+<li>Debian EzGo</li>
+<li>BrDesktop</li>
+<li>Debian Accessibility</li>
+<li>Debian Lex</li>
+<li>DebiChem</li>
+<li>Debian GIS</li>
+<li>Debian Multimedia</li>
+</ul>
+<p>Projects working on Blends - some pure, some not (yet)...</p>
+</div>
+<div class="slide">
+<h1 id="debian-pure-blends---all-debian">Debian Pure Blends - all Debian</h1>
+<ul>
+<li><strong>D</strong>ebian packages - selections (e.g. for tasksel to pick up)</li>
+<li><strong>D</strong>ebian configuration - use of policy-compliant package-provided interfaces</li>
+<li><strong>D</strong>ebian distribution media - installing via Debian itself</li>
+</ul>
+<dl>
+<dt>DDD</dt>
+<dd><strong>Debian</strong> packages <strong>Debian</strong> configured from <strong>Debian</strong> distribution
+</dd>
+</dl>
+</div>
+<div class="slide">
+<h1 id="debian-pure-blends---why-bother">Debian Pure Blends - why bother?</h1>
+<p>Nice on paper with ideals and priciples, but...</p>
+<p>What's in it for me?!?</p>
+</div>
+<div class="slide">
+<h1 id="debian-pure-blends---downsides">Debian Pure Blends - downsides</h1>
+<ul>
+<li><strong>annoying</strong> - Debian package maintainers may not like proposed changes</li>
+<li><strong>slow</strong> - stable distribution is released infrequently</li>
+<li><strong>rigid</strong> - all contributions must match Debian Free Software Guidelines</li>
+<li><strong>complex</strong> - packages must obey Debian Policy</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="debian-pure-blends---benefits">Debian Pure Blends - Benefits</h1>
+<ul>
+<li>backed by Debian - help, bug tracking, translations, etc.</li>
+<li>teamwork - others might help you refine and maintain your setups</li>
+<li>common structures - others might take over if you loose interest</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="tech---debian-support-overloading-choices">Tech - Debian support overloading choices</h1>
+<ul>
+<li>Debian installer</li>
+<li>tasksel</li>
+<li>debconf</li>
+<li>aptitude</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="tech---examples-of-non-pure-blending">Tech - examples of non-pure blending</h1>
+<ul>
+<li>include non-Debian packages or non-packaged stuff</li>
+<li>include Debian packages from different Debian suite</li>
+<li>configure system other than via Debian package installation</li>
+<li>install using non-Debian media</li>
+</ul>
+<p>You don't own your system - you provide one for others to own.</p>
+<p>So don't refine it like a (sloppy) user: Handle it like a Debian developer!</p>
+</div>
+<div class="slide">
+<h1 id="tech---debian-generic-setup">Tech - Debian, generic setup</h1>
+<ul>
+<li>select package profile(s)</li>
+<li>install</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="tech---debian-hand-tuned">Tech - Debian, hand-tuned</h1>
+<ul>
+<li>select package profile(s)</li>
+<li>select additional packages</li>
+<li>install</li>
+<li>(re)configure packages</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="tech---debian-auto-tuned">Tech - Debian, auto-tuned</h1>
+<ul>
+<li>pre-seed package selection</li>
+<li>pre-seed package configurations</li>
+<li>install</li>
+<li>(re)configure non-debconf packages</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="tech---debian-pure-blend-generic">Tech - Debian Pure Blend = generic</h1>
+<ul>
+<li>select blend profile</li>
+<li>install</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="tech---tasks-involved">Tech - tasks involved</h1>
+<ul>
+<li>extra software → into Debian officially</li>
+<li>manual configurations → preseeding</li>
+<li>maybe create temporary dirty hacks</li>
+<li>maybe use/create reusable tweaks</li>
+<li>eliminate dirty hacks and tweaks</li>
+<li>convince others in Debian to add as tasksel task</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="tech---blends-dev">Tech - blends-dev</h1>
+<p>Tool to help maintain package lists and prospective packages.</p>
+<p>Example: <a href="http://debian-med.alioth.debian.org/tasks/psychology"><code class="url">http://debian-med.alioth.debian.org/tasks/psychology</code></a></p>
+</div>
+<div class="slide">
+<h1 id="tech---dirty-tricks">Tech - dirty tricks</h1>
+<p>Avoid configuration files...</p>
+<ul>
+<li>config.d folders</li>
+<li>databases</li>
+<li>networked data</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="tech---tweaks">Tech - tweaks</h1>
+<p>Reusable scripts compatible with one or more of...</p>
+<ul>
+<li>FAI</li>
+<li>hands-off at http://hands.com/d-i/</li>
+<li>CFengine</li>
+<li>Puppet</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="tech---good-style">Tech - good style</h1>
+<ul>
+<li>Aptitude</li>
+<li>debconf</li>
+<li>Config::Model</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="tech---when-is-it-pure">Tech - When is it &quot;Pure&quot;?</h1>
+<p>When all is in Debian, with no dirty tricks:</p>
+<ul>
+<li>package selection(s)</li>
+<li>customizations</li>
+<li>installation</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="team---getting-involved">Team - getting involved</h1>
+<ul>
+<li>identify and isolate tweaks at your own system</li>
+<li>register missing software - on wiki page or (better!) in Debian BTS</li>
+<li>write documentation</li>
+<li>write the dream of how things ought to work</li>
+<li>wite how details work now</li>
+<li>discuss downstream (i.e. with users and subdistros) how things work / should work</li>
+<li>discuss upstream (i.e. with authors) what is possible now / soon</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="team---getting-involved-ii">Team - getting involved II</h1>
+<ul>
+<li>write intro for peer enthusiasts</li>
+<li>decide and document ideal formats - translations, graphics etc.</li>
+<li>prioritize pending tasks - of various kinds to encourage many different contributions</li>
+<li>document where it is ok to ask beginners' questions</li>
+<li>document if beginners can ask for a mentor</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="team---getting-involved-iii">Team - getting involved III</h1>
+<ul>
+<li>make illustration</li>
+<li>make screendumps</li>
+<li>make fan graphics</li>
+<li>make desktop backgrounds, CD covers, stickers, etc.</li>
+<li>Register the project as a DOAP file, and maybe at Ohloh and Freshmeat etc.</li>
+<li>Register and maintain relevant Debtags</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="team---getting-involved-iv">Team - getting involved IV</h1>
+<ul>
+<li>Translate package descriptions</li>
+<li>Translate debconf dialogs</li>
+<li>Translate upstream code</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="team---getting-involved-v">Team - getting involved V</h1>
+<ul>
+<li>Help integrate contributions from graphics artists, translators and others</li>
+<li>document decision processes of the team (and Debian and upstreams?)</li>
+<li>document workflows in teams</li>
+<li>insist on transparency - not only for code!</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="team---continuous-status-checks">Team - Continuous status checks</h1>
+<ul>
+<li>Ask users about their needs - you will forget over time!</li>
+<li>Ask teams about their tasks - each participant has slightly different perception of the common vision and status</li>
+<li>Ask upstreams about use: perhaps potentials are missed, or code or persons feel as being abused</li>
+</ul>
+</div>
+<div class="slide">
+<h1 id="debian-pure-blends---future">Debian Pure Blends - Future</h1>
+<ul>
+<li>debconf dontcare vs. explicit choice of default option</li>
+<li>debconf query mechanism (and fill buffer from live system)</li>
+<li>APT explicit choice of alternate dependency/recommendation</li>
+<li>APT dontcare vs. explicit choice of default dependency/recommendation</li>
+<li>Config::Model - semantic configfile handling</li>
+</ul>
+</div>
+</body>
+</html>
diff --git a/blends/talk/slidy.css b/blends/talk/slidy.css
new file mode 100644
index 0000000..96e3da7
--- /dev/null
+++ b/blends/talk/slidy.css
@@ -0,0 +1,401 @@
+/* slidy.css
+
+   Copyright (c) 2005-2010 W3C (MIT, ERCIM, Keio), All Rights Reserved.
+   W3C liability, trademark, document use and software licensing
+   rules apply, see:
+
+   http://www.w3.org/Consortium/Legal/copyright-documents
+   http://www.w3.org/Consortium/Legal/copyright-software
+*/
+body
+{
+  margin: 0 0 0 0;
+  padding: 0 0 0 0;
+  width: 100%;
+  height: 100%;
+  color: black;
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+  font-family: "Gill Sans MT", "Gill Sans", GillSans, sans-serif;
+  font-size: 14pt;
+}
+
+div.toolbar {
+  position: fixed; z-index: 200;
+  top: auto; bottom: 0; left: 0; right: 0;
+  height: 1.2em; text-align: right;
+  padding-left: 1em;
+  padding-right: 1em; 
+  font-size: 60%;
+  color: red;
+  background-color: rgb(240,240,240);
+  border-top: solid 1px rgb(180,180,180);
+}
+
+div.toolbar span.copyright {
+  color: black;
+  margin-left: 0.5em;
+}
+
+div.initial_prompt {
+  position: absolute;
+  z-index: 1000;
+  bottom: 1.2em;
+  width: 100%;
+  background-color: rgb(200,200,200);
+  opacity: 0.35;
+  background-color: rgb(200,200,200, 0.35);
+  cursor: pointer;
+}
+
+div.initial_prompt p.help {
+  text-align: center;
+}
+
+div.initial_prompt p.close {
+  text-align: right;
+  font-style: italic;
+}
+
+div.slidy_toc {
+  position: absolute;
+  z-index: 300;
+  width: 60%;
+  max-width: 30em;
+  height: 30em;
+  overflow: auto;
+  top: auto;
+  right: auto;
+  left: 4em;
+  bottom: 4em;
+  padding: 1em;
+  background: rgb(240,240,240);
+  border-style: solid;
+  border-width: 2px;
+  font-size: 60%;
+}
+
+div.slidy_toc .toc_heading {
+  text-align: center;
+  width: 100%;
+  margin: 0;
+  margin-bottom: 1em;
+  border-bottom-style: solid;
+  border-bottom-color: rgb(180,180,180);
+  border-bottom-width: 1px;
+}
+
+div.slide {
+  z-index: 20;
+  margin: 0 0 0 0;
+  padding-top: 0;
+  padding-bottom: 0;
+  padding-left: 20px;
+  padding-right: 20px;
+  border-width: 0;
+  clear: both;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  line-height: 120%;
+  background-color: transparent;
+}
+
+div.background {
+  display: none;
+}
+
+div.handout {
+  margin-left: 20px;
+  margin-right: 20px;
+}
+
+div.slide.titlepage {
+  text-align: center;
+}
+
+div.slide.titlepage h1 {
+  padding-top: 10%;
+  margin-right: 0;
+}
+
+div.slide h1 {
+  padding-left: 0;
+  padding-right: 20pt;
+  padding-top: 4pt;
+  padding-bottom: 4pt;
+  margin-top: 0;
+  margin-left: 0;
+  margin-right: 60pt;
+  margin-bottom: 0.5em;
+  display: block; 
+  font-size: 160%;
+  line-height: 1.2em;
+  background: transparent;
+}
+
+div.toc {
+  position: absolute;
+  top: auto;
+  bottom: 4em;
+  left: 4em;
+  right: auto;
+  width: 60%;
+  max-width: 30em;
+  height: 30em;
+  border: solid thin black;
+  padding: 1em;
+  background: rgb(240,240,240);
+  color: black;
+  z-index: 300;
+  overflow: auto;
+  display: block;
+  visibility: visible;
+}
+
+div.toc-heading {
+  width: 100%;
+  border-bottom: solid 1px rgb(180,180,180);
+  margin-bottom: 1em;
+  text-align: center;
+}
+
+pre {
+ font-size: 80%;
+ font-weight: bold;
+ line-height: 120%;
+ padding-top: 0.2em;
+ padding-bottom: 0.2em;
+ padding-left: 1em;
+ padding-right: 1em;
+ border-style: solid;
+ border-left-width: 1em;
+ border-top-width: thin;
+ border-right-width: thin;
+ border-bottom-width: thin;
+ border-color: #95ABD0;
+ color: #00428C;
+ background-color: #E4E5E7;
+}
+
+li pre { margin-left: 0; }
+
+blockquote { font-style: italic }
+
+img { background-color: transparent }
+
+p.copyright { font-size: smaller }
+
+.center { text-align: center }
+.footnote { font-size: smaller; margin-left: 2em; }
+
+a img { border-width: 0; border-style: none }
+
+a:visited { color: navy }
+a:link { color: navy }
+a:hover { color: red; text-decoration: underline }
+a:active { color: red; text-decoration: underline }
+
+a {text-decoration: none}
+.navbar a:link {color: white}
+.navbar a:visited {color: yellow}
+.navbar a:active {color: red}
+.navbar a:hover {color: red}
+
+ul { list-style-type: square; }
+ul ul { list-style-type: disc; }
+ul ul ul { list-style-type: circle; }
+ul ul ul ul { list-style-type: disc; }
+li { margin-left: 0.5em; margin-top: 0.5em; }
+li li { font-size: 85%; font-style: italic }
+li li li { font-size: 85%; font-style: normal }
+
+div dt
+{
+  margin-left: 0;
+  margin-top: 1em;
+  margin-bottom: 0.5em;
+  font-weight: bold;
+}
+div dd
+{
+  margin-left: 2em;
+  margin-bottom: 0.5em;
+}
+
+
+p,pre,ul,ol,blockquote,h2,h3,h4,h5,h6,dl,table {
+  margin-left: 1em;
+  margin-right: 1em;
+}
+
+p.subhead { font-weight: bold; margin-top: 2em; }
+
+.smaller { font-size: smaller }
+.bigger { font-size: 130% }
+
+td,th { padding: 0.2em }
+
+ul {
+  margin: 0.5em 1.5em 0.5em 1.5em;
+  padding: 0;
+}
+
+ol {
+  margin: 0.5em 1.5em 0.5em 1.5em;
+  padding: 0;
+}
+
+ul { list-style-type: square; }
+ul ul { list-style-type: disc; }
+ul ul ul { list-style-type: circle; }
+ul ul ul ul { list-style-type: disc; }
+
+ul li { 
+  list-style: square;
+  margin: 0.1em 0em 0.6em 0;
+  padding: 0 0 0 0;
+  line-height: 140%;
+}
+
+ol li { 
+  margin: 0.1em 0em 0.6em 1.5em;
+  padding: 0 0 0 0px;
+  line-height: 140%;
+  list-style-type: decimal;
+}
+
+li ul li { 
+  font-size: 85%; 
+  font-style: italic;
+  list-style-type: disc;
+  background: transparent;
+  padding: 0 0 0 0;
+}
+li li ul li { 
+  font-size: 85%; 
+  font-style: normal;
+  list-style-type: circle;
+  background: transparent;
+  padding: 0 0 0 0;
+}
+li li li ul li {
+  list-style-type: disc;
+  background: transparent;
+  padding: 0 0 0 0;
+}
+
+li ol li {
+  list-style-type: decimal;
+}
+
+
+li li ol li {
+  list-style-type: decimal;
+}
+
+/*
+ setting class="outline on ol or ul makes it behave as an
+ ouline list where blocklevel content in li elements is
+ hidden by default and can be expanded or collapsed with
+ mouse click. Set class="expand" on li to override default
+*/
+
+ol.outline li:hover { cursor: pointer }
+ol.outline li.nofold:hover { cursor: default }
+
+ul.outline li:hover { cursor: pointer }
+ul.outline li.nofold:hover { cursor: default }
+
+ol.outline { list-style:decimal; }
+ol.outline ol { list-style-type:lower-alpha }
+
+ol.outline li.nofold {
+  padding: 0 0 0 20px;
+  background: transparent url(../graphics/nofold-dim.gif) no-repeat 0px 0.5em;
+}
+ol.outline li.unfolded {
+  padding: 0 0 0 20px;
+  background: transparent url(../graphics/fold-dim.gif) no-repeat 0px 0.5em;
+}
+ol.outline li.folded {
+  padding: 0 0 0 20px;
+  background: transparent url(../graphics/unfold-dim.gif) no-repeat 0px 0.5em;
+}
+ol.outline li.unfolded:hover {
+  padding: 0 0 0 20px;
+  background: transparent url(../graphics/fold.gif) no-repeat 0px 0.5em;
+}
+ol.outline li.folded:hover {
+  padding: 0 0 0 20px;
+  background: transparent url(../graphics/unfold.gif) no-repeat 0px 0.5em;
+}
+
+ul.outline li.nofold {
+  padding: 0 0 0 20px;
+  background: transparent url(../graphics/nofold-dim.gif) no-repeat 0px 0.5em;
+}
+ul.outline li.unfolded {
+  padding: 0 0 0 20px;
+  background: transparent url(../graphics/fold-dim.gif) no-repeat 0px 0.5em;
+}
+ul.outline li.folded {
+  padding: 0 0 0 20px;
+  background: transparent url(../graphics/unfold-dim.gif) no-repeat 0px 0.5em;
+}
+ul.outline li.unfolded:hover {
+  padding: 0 0 0 20px;
+  background: transparent url(../graphics/fold.gif) no-repeat 0px 0.5em;
+}
+ul.outline li.folded:hover {
+  padding: 0 0 0 20px;
+  background: transparent url(../graphics/unfold.gif) no-repeat 0px 0.5em;
+}
+
+/* for slides with class "title" in table of contents */
+a.titleslide { font-weight: bold; font-style: italic }
+
+/*
+ hide images for work around for save as bug
+ where browsers fail to save images used by CSS
+*/
+img.hidden { display: none; visibility: hidden }
+div.initial_prompt { display: none; visibility: hidden }
+
+  div.slide {
+     visibility: visible;
+     position: inherit;
+  }
+  div.handout {
+     border-top-style: solid;
+     border-top-width: thin;
+     border-top-color: black;
+  }
+
+@media screen {
+  .hidden { display: none; visibility: visible }
+
+  div.slide.hidden { display: block; visibility: visible }
+  div.handout.hidden { display: block; visibility: visible }
+  div.background { display: none; visibility: hidden }
+  body.single_slide div.initial_prompt { display: block; visibility: visible }
+  body.single_slide div.background { display: block; visibility: visible }
+  body.single_slide div.background.hidden { display: none; visibility: hidden }
+  body.single_slide .invisible { visibility: hidden }
+  body.single_slide .hidden { display: none; visibility: hidden }
+  body.single_slide div.slide { position: absolute }
+  body.single_slide div.handout { display: none; visibility: hidden }
+}
+
+@media print {
+  .hidden { display: block; visibility: visible }
+
+  div.slide pre { font-size: 60%; padding-left: 0.5em; }
+  div.toolbar { display: none; visibility: hidden; }
+  div.slidy_toc { display: none; visibility: hidden; }
+  div.background { display: none; visibility: hidden; }
+  div.slide { page-break-before: always }
+  /* :first-child isn't reliable for print media */
+  div.slide.first-slide { page-break-before: avoid }
+}
+
diff --git a/blends/talk/slidy.js b/blends/talk/slidy.js
new file mode 100644
index 0000000..9c6d7b1
--- /dev/null
+++ b/blends/talk/slidy.js
@@ -0,0 +1,501 @@
+
+var w3c_slidy={ns_pos:(typeof window.pageYOffset!='undefined'),khtml:((navigator.userAgent).indexOf("KHTML")>=0?true:false),opera:((navigator.userAgent).indexOf("Opera")>=0?true:false),ipad:((navigator.userAgent).indexOf("iPad")>=0?true:false),iphone:((navigator.userAgent).indexOf("iPhone")>=0?true:false),android:((navigator.userAgent).indexOf("Android")>=0?true:false),ie:(typeof document.all!="undefined"&&!this.opera),ie6:(!this.ns_pos&&navigator.userAgent.indexOf("MSIE 6")!=-1),ie7:(!this.ns_pos&&navigator.userAgent.indexOf("MSIE 7")!=-1),ie8:(!this.ns_pos&&navigator.userAgent.indexOf("MSIE 8")!=-1),ie9:(!this.ns_pos&&navigator.userAgent.indexOf("MSIE 9")!=-1),last_tap:0,prev_tap:0,start_x:0,start_y:0,delta_x:0,delta_y:0,is_xhtml:/xml/.test(document.contentType),slide_number:0,slide_number_element:null,slides:[],notes:[],backgrounds:[],toolbar:null,title:null,last_shown:null,eos:null,toc:null,outline:null,selected_text_len:0,view_all:0,want_toolbar:true,mouse_click_enabled:true,scroll_hack:0,disable_slide_click:false,lang:"en",help_anchor:null,help_page:"http://www.w3.org/Talks/Tools/Slidy2/help/help.html",help_text:"Navigate with mouse click, space bar, Cursor Left/Right, "+"or Pg Up and Pg Dn. Use S and B to change font size.",size_index:0,size_adjustment:0,sizes:new Array("10pt","12pt","14pt","16pt","18pt","20pt","22pt","24pt","26pt","28pt","30pt","32pt"),last_width:0,last_height:0,objects:[],set_up:function(){var init=function(){w3c_slidy.init();};if(typeof window.addEventListener!="undefined")
+window.addEventListener("load",init,false);else
+window.attachEvent("onload",init);},hide_slides:function(){if(document.body&&!w3c_slidy.initialized)
+document.body.style.visibility="hidden";else
+setTimeout(w3c_slidy.hide_slides,50);},ie_hack:function(){window.resizeBy(0,-1);window.resizeBy(0,1);},init:function(){document.body.style.visibility="visible";this.init_localization();this.add_toolbar();this.wrap_implicit_slides();this.collect_slides();this.collect_notes();this.collect_backgrounds();this.objects=document.body.getElementsByTagName("object");this.patch_anchors();this.slide_number=this.find_slide_number(location.href);window.offscreenbuffering=true;this.size_adjustment=this.find_size_adjust();this.time_left=this.find_duration();this.hide_image_toolbar();this.init_outliner();this.title=document.title;this.keyboardless=(this.ipad||this.iphone||this.android);if(this.keyboardless)
+{w3c_slidy.remove_class(w3c_slidy.toolbar,"hidden")
+this.want_toolbar=0;}
+this.is_xhtml=(document.body.tagName=="BODY"?false:true);if(this.slides.length>0)
+{var slide=this.slides[this.slide_number];if(this.slide_number>0)
+{this.set_visibility_all_incremental("visible");this.last_shown=this.previous_incremental_item(null);this.set_eos_status(true);}
+else
+{this.last_shown=null;this.set_visibility_all_incremental("hidden");this.set_eos_status(!this.next_incremental_item(this.last_shown));}
+this.set_location();this.add_class(this.slides[0],"first-slide");w3c_slidy.show_slide(slide);}
+this.toc=this.table_of_contents();this.add_initial_prompt();if(!this.keyboardless)
+this.add_listener(document.body,"click",this.mouse_button_click);this.add_listener(document,"keydown",this.key_down);this.add_listener(document,"keypress",this.key_press);this.add_listener(window,"resize",this.resized);this.add_listener(window,"scroll",this.scrolled);this.add_listener(window,"unload",this.unloaded);this.add_listener(document,"touchstart",this.touchstart);this.add_listener(document,"touchmove",this.touchmove);this.add_listener(document,"touchend",this.touchend);this.single_slide_view();this.resized();if(this.ie7)
+setTimeout(w3c_slidy.ie_hack,100);this.show_toolbar();setInterval(function(){w3c_slidy.check_location();},200);w3c_slidy.initialized=true;},table_of_contents:function(){var toc=this.create_element("div");this.add_class(toc,"slidy_toc hidden");var heading=this.create_element("div");this.add_class(heading,"toc-heading");heading.innerHTML=this.localize("Table of Contents");toc.appendChild(heading);var previous=null;for(var i=0;i<this.slides.length;++i)
+{var title=this.has_class(this.slides[i],"title");var num=document.createTextNode((i+1)+". ");toc.appendChild(num);var a=this.create_element("a");a.setAttribute("href","#("+(i+1)+")");if(title)
+this.add_class(a,"titleslide");var name=document.createTextNode(this.slide_name(i));a.appendChild(name);a.onclick=w3c_slidy.toc_click;a.onkeydown=w3c_slidy.toc_key_down;a.previous=previous;if(previous)
+previous.next=a;toc.appendChild(a);if(i==0)
+toc.first=a;if(i<this.slides.length-1)
+{var br=this.create_element("br");toc.appendChild(br);}
+previous=a;}
+toc.focus=function(){if(this.first)
+this.first.focus();}
+toc.onmouseup=w3c_slidy.mouse_button_up;toc.onclick=function(e){e||(e=window.event);if(w3c_slidy.selected_text_len<=0)
+w3c_slidy.hide_table_of_contents(true);w3c_slidy.stop_propagation(e);if(e.cancel!=undefined)
+e.cancel=true;if(e.returnValue!=undefined)
+e.returnValue=false;return false;};document.body.insertBefore(toc,document.body.firstChild);return toc;},is_shown_toc:function(){return!w3c_slidy.has_class(w3c_slidy.toc,"hidden");},show_table_of_contents:function(){w3c_slidy.remove_class(w3c_slidy.toc,"hidden");var toc=w3c_slidy.toc;toc.focus();if(w3c_slidy.ie7&&w3c_slidy.slide_number==0)
+setTimeout(w3c_slidy.ie_hack,100);},hide_table_of_contents:function(focus){w3c_slidy.add_class(w3c_slidy.toc,"hidden");if(focus&&!w3c_slidy.opera)
+w3c_slidy.help_anchor.focus();},toggle_table_of_contents:function(){if(w3c_slidy.is_shown_toc())
+w3c_slidy.hide_table_of_contents(true);else
+w3c_slidy.show_table_of_contents();},toc_click:function(e){if(!e)
+e=window.event;var target=w3c_slidy.get_target(e);if(target&&target.nodeType==1)
+{var uri=target.getAttribute("href");if(uri)
+{var slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.hide_slide(slide);w3c_slidy.slide_number=w3c_slidy.find_slide_number(uri);slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.last_shown=null;w3c_slidy.set_location();w3c_slidy.set_visibility_all_incremental("hidden");w3c_slidy.set_eos_status(!w3c_slidy.next_incremental_item(w3c_slidy.last_shown));w3c_slidy.show_slide(slide);try
+{if(!w3c_slidy.opera)
+w3c_slidy.help_anchor.focus();}
+catch(e)
+{}}}
+w3c_slidy.hide_table_of_contents(true);if(w3c_slidy.ie7)w3c_slidy.ie_hack();w3c_slidy.stop_propagation(e);return w3c_slidy.cancel(e);},toc_key_down:function(event){var key;if(!event)
+var event=window.event;if(window.event)
+key=window.event.keyCode;else if(event.which)
+key=event.which;else
+return true;if(!key)
+return true;if(event.ctrlKey||event.altKey)
+return true;if(key==13)
+{var uri=this.getAttribute("href");if(uri)
+{var slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.hide_slide(slide);w3c_slidy.slide_number=w3c_slidy.find_slide_number(uri);slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.last_shown=null;w3c_slidy.set_location();w3c_slidy.set_visibility_all_incremental("hidden");w3c_slidy.set_eos_status(!w3c_slidy.next_incremental_item(w3c_slidy.last_shown));w3c_slidy.show_slide(slide);try
+{if(!w3c_slidy.opera)
+w3c_slidy.help_anchor.focus();}
+catch(e)
+{}}
+w3c_slidy.hide_table_of_contents(true);if(self.ie7)
+w3c_slidy.ie_hack();return w3c_slidy.cancel(event);}
+if(key==40&&this.next)
+{this.next.focus();return w3c_slidy.cancel(event);}
+if(key==38&&this.previous)
+{this.previous.focus();return w3c_slidy.cancel(event);}
+return true;},touchstart:function(e)
+{this.prev_tap=this.last_tap;this.last_tap=(new Date).getTime();var tap_delay=this.last_tap-this.prev_tap;if(tap_delay<=200)
+{}
+var touch=e.touches[0];this.start_x=touch.pageX;this.start_y=touch.pageY;this.delta_x=this.delta_y=0;},touchmove:function(e)
+{var touch=e.touches[0];this.delta_x=touch.pageX-this.start_x;this.delta_y=touch.pageY-this.start_y;},touchend:function(e)
+{var delay=(new Date).getTime()-this.last_tap;var dx=this.delta_x;var dy=this.delta_y;var abs_dx=Math.abs(dx);var abs_dy=Math.abs(dy);if(delay<500&&(abs_dx>100||abs_dy>100))
+{if(abs_dx>0.5*abs_dy)
+{if(dx>0)
+w3c_slidy.next_slide(true);else
+w3c_slidy.previous_slide(true);}
+else if(abs_dy>2*abs_dx)
+{w3c_slidy.toggle_table_of_contents();}}},before_print:function(){this.show_all_slides();this.hide_toolbar();alert("before print");},after_print:function(){if(!this.view_all)
+{this.single_slide_view();this.show_toolbar();}
+alert("after print");},print_slides:function(){this.before_print();window.print();this.after_print();},toggle_view:function(){if(this.view_all)
+{this.single_slide_view();this.show_toolbar();this.view_all=0;}
+else
+{this.show_all_slides();this.hide_toolbar();this.view_all=1;}},show_all_slides:function(){this.remove_class(document.body,"single_slide");this.set_visibility_all_incremental("visible");},single_slide_view:function(){this.add_class(document.body,"single_slide");this.set_visibility_all_incremental("visible");this.last_shown=this.previous_incremental_item(null);},hide_image_toolbar:function(){if(!this.ns_pos)
+{var images=document.getElementsByTagName("IMG");for(var i=0;i<images.length;++i)
+images[i].setAttribute("galleryimg","no");}},unloaded:function(e){},is_KHTML:function(){var agent=navigator.userAgent;return(agent.indexOf("KHTML")>=0?true:false);},slide_name:function(index){var name=null;var slide=this.slides[index];var heading=this.find_heading(slide);if(heading)
+name=this.extract_text(heading);if(!name)
+name=this.title+"("+(index+1)+")";name.replace(/\&/g,"&amp;");name.replace(/\</g,"&lt;");name.replace(/\>/g,"&gt;");return name;},find_heading:function(node){if(!node||node.nodeType!=1)
+return null;if(node.nodeName=="H1"||node.nodeName=="h1")
+return node;var child=node.firstChild;while(child)
+{node=this.find_heading(child);if(node)
+return node;child=child.nextSibling;}
+return null;},extract_text:function(node){if(!node)
+return"";if(node.nodeType==3)
+return node.nodeValue;if(node.nodeType==1)
+{node=node.firstChild;var text="";while(node)
+{text=text+this.extract_text(node);node=node.nextSibling;}
+return text;}
+return"";},find_copyright:function(){var name,content;var meta=document.getElementsByTagName("meta");for(var i=0;i<meta.length;++i)
+{name=meta[i].getAttribute("name");content=meta[i].getAttribute("content");if(name=="copyright")
+return content;}
+return null;},find_size_adjust:function(){var name,content,offset;var meta=document.getElementsByTagName("meta");for(var i=0;i<meta.length;++i)
+{name=meta[i].getAttribute("name");content=meta[i].getAttribute("content");if(name=="font-size-adjustment")
+return 1*content;}
+return 1;},find_duration:function(){var name,content,offset;var meta=document.getElementsByTagName("meta");for(var i=0;i<meta.length;++i)
+{name=meta[i].getAttribute("name");content=meta[i].getAttribute("content");if(name=="duration")
+return 60000*content;}
+return null;},replace_by_non_breaking_space:function(str){for(var i=0;i<str.length;++i)
+str[i]=160;},init_outliner:function(){var items=document.getElementsByTagName("li");for(var i=0;i<items.length;++i)
+{var target=items[i];if(!this.has_class(target.parentNode,"outline"))
+continue;target.onclick=this.outline_click;if(this.foldable(target))
+{target.foldable=true;target.onfocus=function(){w3c_slidy.outline=this;};target.onblur=function(){w3c_slidy.outline=null;};if(!target.getAttribute("tabindex"))
+target.setAttribute("tabindex","0");if(this.has_class(target,"expand"))
+this.unfold(target);else
+this.fold(target);}
+else
+{this.add_class(target,"nofold");target.visible=true;target.foldable=false;}}},foldable:function(item){if(!item||item.nodeType!=1)
+return false;var node=item.firstChild;while(node)
+{if(node.nodeType==1&&this.is_block(node))
+return true;node=node.nextSibling;}
+return false;},fold:function(item){if(item)
+{this.remove_class(item,"unfolded");this.add_class(item,"folded");}
+var node=item?item.firstChild:null;while(node)
+{if(node.nodeType==1&&this.is_block(node))
+{w3c_slidy.add_class(node,"hidden");}
+node=node.nextSibling;}
+item.visible=false;},unfold:function(item){if(item)
+{this.add_class(item,"unfolded");this.remove_class(item,"folded");}
+var node=item?item.firstChild:null;while(node)
+{if(node.nodeType==1&&this.is_block(node))
+{w3c_slidy.remove_class(node,"hidden");}
+node=node.nextSibling;}
+item.visible=true;},outline_click:function(e){if(!e)
+e=window.event;var rightclick=false;var target=w3c_slidy.get_target(e);while(target&&target.visible==undefined)
+target=target.parentNode;if(!target)
+return true;if(e.which)
+rightclick=(e.which==3);else if(e.button)
+rightclick=(e.button==2);if(!rightclick&&target.visible!=undefined)
+{if(target.foldable)
+{if(target.visible)
+w3c_slidy.fold(target);else
+w3c_slidy.unfold(target);}
+w3c_slidy.stop_propagation(e);e.cancel=true;e.returnValue=false;}
+return false;},add_initial_prompt:function(){var prompt=this.create_element("div");prompt.setAttribute("class","initial_prompt");var p1=this.create_element("p");prompt.appendChild(p1);p1.setAttribute("class","help");if(this.keyboardless)
+p1.innerHTML="swipe right to move to next slide";else
+p1.innerHTML="Space, Right Arrow or swipe right to move to "+"next slide, click help below for more details";this.add_listener(prompt,"click",function(e){document.body.removeChild(prompt);w3c_slidy.stop_propagation(e);if(e.cancel!=undefined)
+e.cancel=true;if(e.returnValue!=undefined)
+e.returnValue=false;return false;});document.body.appendChild(prompt);this.initial_prompt=prompt;setTimeout(function(){document.body.removeChild(prompt);},5000);},add_toolbar:function(){var counter,page;this.toolbar=this.create_element("div");this.toolbar.setAttribute("class","toolbar");if(this.ns_pos||!this.ie6)
+{var right=this.create_element("div");right.setAttribute("style","float: right; text-align: right");counter=this.create_element("span")
+counter.innerHTML=this.localize("slide")+" n/m";right.appendChild(counter);this.toolbar.appendChild(right);var left=this.create_element("div");left.setAttribute("style","text-align: left");this.eos=this.create_element("span");this.eos.innerHTML="* ";left.appendChild(this.eos);var help=this.create_element("a");help.setAttribute("href",this.help_page);help.setAttribute("title",this.localize(this.help_text));help.innerHTML=this.localize("help?");left.appendChild(help);this.help_anchor=help;var gap1=document.createTextNode(" ");left.appendChild(gap1);var contents=this.create_element("a");contents.setAttribute("href","javascript:w3c_slidy.toggle_table_of_contents()");contents.setAttribute("title",this.localize("table of contents"));contents.innerHTML=this.localize("contents?");left.appendChild(contents);var gap2=document.createTextNode(" ");left.appendChild(gap2);var copyright=this.find_copyright();if(copyright)
+{var span=this.create_element("span");span.className="copyright";span.innerHTML=copyright;left.appendChild(span);}
+this.toolbar.setAttribute("tabindex","0");this.toolbar.appendChild(left);}
+else
+{this.toolbar.style.position=(this.ie7?"fixed":"absolute");this.toolbar.style.zIndex="200";this.toolbar.style.width="99.9%";this.toolbar.style.height="1.2em";this.toolbar.style.top="auto";this.toolbar.style.bottom="0";this.toolbar.style.left="0";this.toolbar.style.right="0";this.toolbar.style.textAlign="left";this.toolbar.style.fontSize="60%";this.toolbar.style.color="red";this.toolbar.borderWidth=0;this.toolbar.className="toolbar";this.toolbar.style.background="rgb(240,240,240)";var sp=this.create_element("span");sp.innerHTML="&nbsp;&nbsp;*&nbsp;";this.toolbar.appendChild(sp);this.eos=sp;var help=this.create_element("a");help.setAttribute("href",this.help_page);help.setAttribute("title",this.localize(this.help_text));help.innerHTML=this.localize("help?");this.toolbar.appendChild(help);this.help_anchor=help;var gap1=document.createTextNode(" ");this.toolbar.appendChild(gap1);var contents=this.create_element("a");contents.setAttribute("href","javascript:toggleTableOfContents()");contents.setAttribute("title",this.localize("table of contents".localize));contents.innerHTML=this.localize("contents?");this.toolbar.appendChild(contents);var gap2=document.createTextNode(" ");this.toolbar.appendChild(gap2);var copyright=this.find_copyright();if(copyright)
+{var span=this.create_element("span");span.innerHTML=copyright;span.style.color="black";span.style.marginLeft="0.5em";this.toolbar.appendChild(span);}
+counter=this.create_element("div")
+counter.style.position="absolute";counter.style.width="auto";counter.style.height="1.2em";counter.style.top="auto";counter.style.bottom=0;counter.style.right="0";counter.style.textAlign="right";counter.style.color="red";counter.style.background="rgb(240,240,240)";counter.innerHTML=this.localize("slide")+" n/m";this.toolbar.appendChild(counter);}
+this.toolbar.onclick=function(e){if(!e)
+e=window.event;var target=e.target;if(!target&&e.srcElement)
+target=e.srcElement;if(target&&target.nodeType==3)
+target=target.parentNode;w3c_slidy.stop_propagation(e);if(target&&target.nodeName.toLowerCase()!="a")
+w3c_slidy.mouse_button_click(e);};this.slide_number_element=counter;this.set_eos_status(false);document.body.appendChild(this.toolbar);},wrap_implicit_slides:function(){var i,heading,node,next,div;var headings=document.getElementsByTagName("h1");if(!headings)
+return;for(i=0;i<headings.length;++i)
+{heading=headings[i];if(heading.parentNode!=document.body)
+continue;node=heading.nextSibling;div=document.createElement("div");this.add_class(div,"slide");document.body.replaceChild(div,heading);div.appendChild(heading);while(node)
+{if(node.nodeType==1&&(node.nodeName=="H1"||node.nodeName=="h1"||node.nodeName=="DIV"||node.nodeName=="div"))
+break;next=node.nextSibling;node=document.body.removeChild(node);div.appendChild(node);node=next;}}},collect_slides:function(){var slides=new Array();var divs=document.body.getElementsByTagName("div");for(var i=0;i<divs.length;++i)
+{div=divs.item(i);if(this.has_class(div,"slide"))
+{slides[slides.length]=div;this.add_class(div,"hidden");var node1=document.createElement("br");div.appendChild(node1);var node2=document.createElement("br");div.appendChild(node2);}
+else if(this.has_class(div,"background"))
+{div.style.display="block";}}
+this.slides=slides;},collect_notes:function(){var notes=new Array();var divs=document.body.getElementsByTagName("div");for(var i=0;i<divs.length;++i)
+{div=divs.item(i);if(this.has_class(div,"handout"))
+{notes[notes.length]=div;this.add_class(div,"hidden");}}
+this.notes=notes;},collect_backgrounds:function(){var backgrounds=new Array();var divs=document.body.getElementsByTagName("div");for(var i=0;i<divs.length;++i)
+{div=divs.item(i);if(this.has_class(div,"background"))
+{backgrounds[backgrounds.length]=div;this.add_class(div,"hidden");}}
+this.backgrounds=backgrounds;},patch_anchors:function(){var self=w3c_slidy;var handler=function(event){if(self.page_address(this.href)==self.page_address(location.href))
+{var newslidenum=self.find_slide_number(this.href);if(newslidenum!=self.slide_number)
+{var slide=self.slides[self.slide_number];self.hide_slide(slide);self.slide_number=newslidenum;slide=self.slides[self.slide_number];self.show_slide(slide);self.set_location();}}
+else
+w3c_slidy.stop_propagation(event);this.blur();self.disable_slide_click=true;};var anchors=document.body.getElementsByTagName("a");for(var i=0;i<anchors.length;++i)
+{if(window.addEventListener)
+anchors[i].addEventListener("click",handler,false);else
+anchors[i].attachEvent("onclick",handler);}},show_slide_number:function(){var timer=w3c_slidy.get_timer();w3c_slidy.slide_number_element.innerHTML=timer+w3c_slidy.localize("slide")+" "+
+(w3c_slidy.slide_number+1)+"/"+w3c_slidy.slides.length;},check_location:function(){var hash=location.hash;if(w3c_slidy.slide_number>0&&(hash==""||hash=="#"))
+w3c_slidy.goto_slide(0);else if(hash.length>2&&hash!="#("+(w3c_slidy.slide_number+1)+")")
+{var num=parseInt(location.hash.substr(2));if(!isNaN(num))
+w3c_slidy.goto_slide(num-1);}
+if(w3c_slidy.time_left&&w3c_slidy.slide_number>0)
+{w3c_slidy.show_slide_number();if(w3c_slidy.time_left>0)
+w3c_slidy.time_left-=200;}},get_timer:function(){var timer="";if(w3c_slidy.time_left)
+{var mins,secs;secs=Math.floor(w3c_slidy.time_left/1000);mins=Math.floor(secs/60);secs=secs%60;timer=(mins?mins+"m":"")+secs+"s ";}
+return timer;},set_location:function(){var uri=w3c_slidy.page_address(location.href);var hash="#("+(w3c_slidy.slide_number+1)+")";if(w3c_slidy.slide_number>=0)
+uri=uri+hash;if(w3c_slidy.ie&&(w3c_slidy.ie6||w3c_slidy.ie7))
+w3c_slidy.push_hash(hash);if(uri!=location.href)
+location.href=uri;if(this.khtml)
+hash="("+(w3c_slidy.slide_number+1)+")";if(!this.ie&&location.hash!=hash&&location.hash!="")
+location.hash=hash;document.title=w3c_slidy.title+" ("+(w3c_slidy.slide_number+1)+")";w3c_slidy.show_slide_number();},page_address:function(uri){var i=uri.indexOf("#");if(i<0)
+i=uri.indexOf("%23");if(i<0)
+return uri;return uri.substr(0,i);},on_frame_loaded:function(hash){location.hash=hash;var uri=w3c_slidy.page_address(location.href);location.href=uri+hash;},push_hash:function(hash){if(hash=="")hash="#(1)";window.location.hash=hash;var doc=document.getElementById("historyFrame").contentWindow.document;doc.open("javascript:'<html></html>'");doc.write("<html><head><script type=\"text/javascript\">window.parent.w3c_slidy.on_frame_loaded('"+
+(hash)+"');</script></head><body>hello mum</body></html>");doc.close();},find_slide_number:function(uri){var i=uri.indexOf("#");if(i<0)
+return 0;var anchor=unescape(uri.substr(i+1));var target=document.getElementById(anchor);if(!target)
+{var re=/\((\d)+\)/;if(anchor.match(re))
+{var num=parseInt(anchor.substring(1,anchor.length-1));if(num>this.slides.length)
+num=1;if(--num<0)
+num=0;return num;}
+re=/\[(\d)+\]/;if(anchor.match(re))
+{var num=parseInt(anchor.substring(1,anchor.length-1));if(num>this.slides.length)
+num=1;if(--num<0)
+num=0;return num;}
+return 0;}
+while(true)
+{if(target.nodeName.toLowerCase()=="div"&&this.has_class(target,"slide"))
+{break;}
+target=target.parentNode;if(!target)
+{return 0;}};for(i=0;i<slides.length;++i)
+{if(slides[i]==target)
+return i;}
+return 0;},previous_slide:function(incremental){if(!w3c_slidy.view_all)
+{var slide;if((incremental||w3c_slidy.slide_number==0)&&w3c_slidy.last_shown!=null)
+{w3c_slidy.last_shown=w3c_slidy.hide_previous_item(w3c_slidy.last_shown);w3c_slidy.set_eos_status(false);}
+else if(w3c_slidy.slide_number>0)
+{slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.hide_slide(slide);w3c_slidy.slide_number=w3c_slidy.slide_number-1;slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.set_visibility_all_incremental("visible");w3c_slidy.last_shown=w3c_slidy.previous_incremental_item(null);w3c_slidy.set_eos_status(true);w3c_slidy.show_slide(slide);}
+w3c_slidy.set_location();if(!w3c_slidy.ns_pos)
+w3c_slidy.refresh_toolbar(200);}},next_slide:function(incremental){if(!w3c_slidy.view_all)
+{var slide,last=w3c_slidy.last_shown;if(incremental||w3c_slidy.slide_number==w3c_slidy.slides.length-1)
+w3c_slidy.last_shown=w3c_slidy.reveal_next_item(w3c_slidy.last_shown);if((!incremental||w3c_slidy.last_shown==null)&&w3c_slidy.slide_number<w3c_slidy.slides.length-1)
+{slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.hide_slide(slide);w3c_slidy.slide_number=w3c_slidy.slide_number+1;slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.last_shown=null;w3c_slidy.set_visibility_all_incremental("hidden");w3c_slidy.show_slide(slide);}
+else if(!w3c_slidy.last_shown)
+{if(last&&incremental)
+w3c_slidy.last_shown=last;}
+w3c_slidy.set_location();w3c_slidy.set_eos_status(!w3c_slidy.next_incremental_item(w3c_slidy.last_shown));if(!w3c_slidy.ns_pos)
+w3c_slidy.refresh_toolbar(200);}},first_slide:function(){if(!w3c_slidy.view_all)
+{var slide;if(w3c_slidy.slide_number!=0)
+{slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.hide_slide(slide);w3c_slidy.slide_number=0;slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.last_shown=null;w3c_slidy.set_visibility_all_incremental("hidden");w3c_slidy.show_slide(slide);}
+w3c_slidy.set_eos_status(!w3c_slidy.next_incremental_item(w3c_slidy.last_shown));w3c_slidy.set_location();}},last_slide:function(){if(!w3c_slidy.view_all)
+{var slide;w3c_slidy.last_shown=null;if(w3c_slidy.last_shown==null&&w3c_slidy.slide_number<w3c_slidy.slides.length-1)
+{slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.hide_slide(slide);w3c_slidy.slide_number=w3c_slidy.slides.length-1;slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.set_visibility_all_incremental("visible");w3c_slidy.last_shown=w3c_slidy.previous_incremental_item(null);w3c_slidy.show_slide(slide);}
+else
+{w3c_slidy.set_visibility_all_incremental("visible");w3c_slidy.last_shown=w3c_slidy.previous_incremental_item(null);}
+w3c_slidy.set_eos_status(true);w3c_slidy.set_location();}},set_eos_status:function(state){if(this.eos)
+this.eos.style.color=(state?"rgb(240,240,240)":"red");},goto_slide:function(num){var slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.hide_slide(slide);w3c_slidy.slide_number=num;slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.last_shown=null;w3c_slidy.set_visibility_all_incremental("hidden");w3c_slidy.set_eos_status(!w3c_slidy.next_incremental_item(w3c_slidy.last_shown));document.title=w3c_slidy.title+" ("+(w3c_slidy.slide_number+1)+")";w3c_slidy.show_slide(slide);w3c_slidy.show_slide_number();},show_slide:function(slide){this.sync_background(slide);window.scrollTo(0,0);this.remove_class(slide,"hidden");},hide_slide:function(slide){this.add_class(slide,"hidden");},sync_background:function(slide){var background;var bgColor;if(slide.currentStyle)
+bgColor=slide.currentStyle["backgroundColor"];else if(document.defaultView)
+{var styles=document.defaultView.getComputedStyle(slide,null);if(styles)
+bgColor=styles.getPropertyValue("background-color");else
+{bgColor="transparent";}}
+else
+bgColor=="transparent";if(bgColor=="transparent"||bgColor.indexOf("rgba")>=0||bgColor.indexOf("opacity")>=0)
+{var slideClass=this.get_class_list(slide);for(var i=0;i<this.backgrounds.length;i++)
+{background=this.backgrounds[i];var bgClass=this.get_class_list(background);if(this.matching_background(slideClass,bgClass))
+this.remove_class(background,"hidden");else
+this.add_class(background,"hidden");}}
+else
+this.hide_backgrounds();},hide_backgrounds:function(){for(var i=0;i<this.backgrounds.length;i++)
+{background=this.backgrounds[i];this.add_class(background,"hidden");}},matching_background:function(slideClass,bgClass){var i,count,pattern,result;pattern=/\w+/g;result=bgClass.match(pattern);for(i=count=0;i<result.length;i++)
+{if(result[i]=="hidden")
+continue;if(result[i]=="background")
+continue;++count;}
+if(count==0)
+return true;result=slideClass.match(pattern);for(i=count=0;i<result.length;i++)
+{if(result[i]=="hidden")
+continue;if(this.has_token(bgClass,result[i]))
+return true;}
+return false;},resized:function(){var width=0;if(typeof(window.innerWidth)=='number')
+width=window.innerWidth;else if(document.documentElement&&document.documentElement.clientWidth)
+width=document.documentElement.clientWidth;else if(document.body&&document.body.clientWidth)
+width=document.body.clientWidth;var height=0;if(typeof(window.innerHeight)=='number')
+height=window.innerHeight;else if(document.documentElement&&document.documentElement.clientHeight)
+height=document.documentElement.clientHeight;else if(document.body&&document.body.clientHeight)
+height=document.body.clientHeight;if(height&&(width/height>1.05*1024/768))
+{width=height*1024.0/768;}
+if(width!=w3c_slidy.last_width||height!=w3c_slidy.last_height)
+{if(width>=1100)
+w3c_slidy.size_index=5;else if(width>=1000)
+w3c_slidy.size_index=4;else if(width>=800)
+w3c_slidy.size_index=3;else if(width>=600)
+w3c_slidy.size_index=2;else if(width)
+w3c_slidy.size_index=0;if(0<=w3c_slidy.size_index+w3c_slidy.size_adjustment&&w3c_slidy.size_index+w3c_slidy.size_adjustment<w3c_slidy.sizes.length)
+w3c_slidy.size_index=w3c_slidy.size_index+w3c_slidy.size_adjustment;w3c_slidy.adjust_object_dimensions(width,height);if(document.body.style.fontSize!=w3c_slidy.sizes[w3c_slidy.size_index])
+{document.body.style.fontSize=w3c_slidy.sizes[w3c_slidy.size_index];}
+w3c_slidy.last_width=width;w3c_slidy.last_height=height;if(w3c_slidy.ns_pos)
+{var slide=w3c_slidy.slides[w3c_slidy.slide_number];w3c_slidy.hide_slide(slide);w3c_slidy.show_slide(slide);}
+w3c_slidy.refresh_toolbar(200);}},scrolled:function(){if(w3c_slidy.toolbar&&!w3c_slidy.ns_pos&&!w3c_slidy.ie7)
+{w3c_slidy.hack_offset=w3c_slidy.scroll_x_offset();w3c_slidy.toolbar.style.display="none";if(w3c_slidy.scrollhack==0&&!w3c_slidy.view_all)
+{setTimeout(function(){w3c_slidy.show_toolbar();},1000);w3c_slidy.scrollhack=1;}}},hide_toolbar:function(){w3c_slidy.add_class(w3c_slidy.toolbar,"hidden");window.focus();},refresh_toolbar:function(interval){if(!w3c_slidy.ns_pos&&!w3c_slidy.ie7)
+{w3c_slidy.hide_toolbar();setTimeout(function(){w3c_slidy.show_toolbar();},interval);}},show_toolbar:function(){if(w3c_slidy.want_toolbar)
+{w3c_slidy.toolbar.style.display="block";if(!w3c_slidy.ns_pos)
+{var xoffset=w3c_slidy.scroll_x_offset();w3c_slidy.toolbar.style.left=xoffset;w3c_slidy.toolbar.style.right=xoffset;w3c_slidy.toolbar.style.bottom=0;}
+w3c_slidy.remove_class(w3c_slidy.toolbar,"hidden");}
+w3c_slidy.scrollhack=0;try
+{if(!w3c_slidy.opera)
+w3c_slidy.help_anchor.focus();}
+catch(e)
+{}},toggle_toolbar:function(){if(!w3c_slidy.view_all)
+{if(w3c_slidy.has_class(w3c_slidy.toolbar,"hidden"))
+{w3c_slidy.remove_class(w3c_slidy.toolbar,"hidden")
+w3c_slidy.want_toolbar=1;}
+else
+{w3c_slidy.add_class(w3c_slidy.toolbar,"hidden")
+w3c_slidy.want_toolbar=0;}}},scroll_x_offset:function(){if(window.pageXOffset)
+return self.pageXOffset;if(document.documentElement&&document.documentElement.scrollLeft)
+return document.documentElement.scrollLeft;if(document.body)
+return document.body.scrollLeft;return 0;},scroll_y_offset:function(){if(window.pageYOffset)
+return self.pageYOffset;if(document.documentElement&&document.documentElement.scrollTop)
+return document.documentElement.scrollTop;if(document.body)
+return document.body.scrollTop;return 0;},optimize_font_size:function(){var slide=w3c_slidy.slides[w3c_slidy.slide_number];var dh=slide.scrollHeight;var wh=getWindowHeight();var u=100*dh/wh;alert("window utilization = "+u+"% (doc "
++dh+" win "+wh+")");},get_doc_height:function(doc){if(!doc)
+doc=document;if(doc&&doc.body&&doc.body.offsetHeight)
+return doc.body.offsetHeight;if(doc&&doc.body&&doc.body.scrollHeight)
+return doc.body.scrollHeight;alert("couldn't determine document height");},get_window_height:function(){if(typeof(window.innerHeight)=='number')
+return window.innerHeight;if(document.documentElement&&document.documentElement.clientHeight)
+return document.documentElement.clientHeight;if(document.body&&document.body.clientHeight)
+return document.body.clientHeight;},document_height:function(){var sh,oh;sh=document.body.scrollHeight;oh=document.body.offsetHeight;if(sh&&oh)
+{return(sh>oh?sh:oh);}
+return 0;},smaller:function(){if(w3c_slidy.size_index>0)
+{--w3c_slidy.size_index;}
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