--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/presen/s6/js/jquery.slideshow.footer.js	Thu Feb 18 00:33:49 2016 +0900
@@ -0,0 +1,82 @@
+/***********
+ *
+ *  footer/header addon:
+ *
+ *   adds footer/header
+ *   - use key-f to toggle footer/header (in projection mode)
+ *
+ *   layout structure:
+ *
+ *  .layout
+ *    > #header
+ *    > #footer
+ */
+
+
+Slideshow.footerDebugOn = function()
+{
+  this.debug( 'calling footerDebugOn()' );
+
+  $( '.layout #header,.layout header' ).addClass( 'debug' );
+  $( '.layout #footer,.layout footer' ).addClass( 'debug' );
+}
+
+Slideshow.footerDebugOff = function()
+{
+  this.debug( 'calling footerDebugOff()' );
+
+  $( '.layout #header,.layout header' ).removeClass( 'debug' );
+  $( '.layout #footer,.layout footer' ).removeClass( 'debug' );
+}
+
+Slideshow.footerKeys = function( event, key )
+{
+  this.debug( 'calling footerKeys()' );
+  
+  switch( key.which ) {
+      case 70: //f
+        this.footerToggle();
+        break;
+  }
+} 
+
+// ------------------------------------------------
+
+Slideshow.footerToggle = function()
+{
+  // todo/fix: note jquery sets inline css (e.g. display: block)
+  //   but css won't get scoped for media (e.g. projection, screen, etc)
+  //   thus, css changes "spill over" to all media types
+
+  // fix: add/remove Class hidden?? instead of toggle()
+
+  $( '.layout #footer, .layout footer').toggle(); 
+}
+
+// ------------------------------------------------
+
+Slideshow.footerAddEvents = function()
+{
+  $( document ).on( 'slideshow.debug.on',  $.proxy( Slideshow.footerDebugOn, this ));
+  $( document ).on( 'slideshow.debug.off', $.proxy( Slideshow.footerDebugOff, this ));
+  $( document ).on( 'slideshow.keys',      $.proxy( Slideshow.footerKeys, this ));
+}
+
+Slideshow.footerAddStyles = function() {
+  this.debug( 'add builtin footer/header css via inline style elements' );
+  
+   var styleProjection =
+"<style media='screen,projection'>                   \n"+
+" .layout #footer.debug,                             \n"+
+" .layout  footer.debug  { background: #CCF; }       \n"+
+"                                                    \n"+
+" .layout #header.debug,                             \n"+
+" .layout  header.debug { background: #FCC; }        \n"+
+"</style>";
+
+  $( 'head' ).append( styleProjection );
+}
+
+
+Slideshow.footerAddStyles();
+Slideshow.footerAddEvents();
\ No newline at end of file