--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/poster/os9/ui/slides.js	Fri Apr 19 18:23:10 2019 +0900
@@ -0,0 +1,256 @@
+// S5 slides.js -- released under CC by-sa 2.0 license
+//
+// Please see http://www.meyerweb.com/eric/tools/s5/credits.html for information 
+// about all the wonderful and talented contributors to this code!
+
+var snum = 0;
+var smax = 1;
+var undef;
+var slcss = 1;
+var isIE = navigator.appName == 'Microsoft Internet Explorer' ? 1 : 0;
+var isOp = navigator.userAgent.indexOf('Opera') > -1 ? 1 : 0;
+var isGe = navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('Safari') < 1 ? 1 : 0;
+var slideCSS = document.getElementById('slideProj').href;
+
+function isClass(object, className) {
+	return (object.className.search('(^|\\s)' + className + '(\\s|$)') != -1);
+}
+
+function GetElementsWithClassName(elementName,className) {
+	var allElements = document.getElementsByTagName(elementName);
+	var elemColl = new Array();
+	for (i = 0; i< allElements.length; i++) {
+		if (isClass(allElements[i], className)) {
+			elemColl[elemColl.length] = allElements[i];
+		}
+	}
+	return elemColl;
+}
+
+function isParentOrSelf(element, id) {
+	if (element == null || element.nodeName=='BODY') return false;
+	else if (element.id == id) return true;
+	else return isParentOrSelf(element.parentNode, id);
+}
+
+function nodeValue(node) {
+	var result = "";
+	if (node.nodeType == 1) {
+		var children = node.childNodes;
+		for ( i = 0; i < children.length; ++i ) {
+			result += nodeValue(children[i]);
+		}		
+	}
+	else if (node.nodeType == 3) {
+		result = node.nodeValue;
+	}
+	return(result);
+}
+
+function slideLabel() {
+	var slideColl = GetElementsWithClassName('div','slide');
+	var list = document.getElementById('jumplist');
+	smax = slideColl.length;
+	for (n = 0; n < smax; n++) {
+		var obj = slideColl[n];
+
+		var did = 'slide' + n.toString();
+		obj.setAttribute('id',did);
+		if(isOp) continue;
+
+		var otext = '';
+ 		var menu = obj.firstChild;
+		if (!menu) continue; // to cope with empty slides
+		while (menu && menu.nodeType == 3) {
+			menu = menu.nextSibling;
+		}
+	 	if (!menu) continue; // to cope with slides with only text nodes
+
+		var menunodes = menu.childNodes;
+		for (o = 0; o < menunodes.length; o++) {
+			otext += nodeValue(menunodes[o]);
+		}
+		list.options[list.length] = new Option(n+' : ' +otext,n);
+	}
+}
+
+function currentSlide() {
+	var cs;
+	if (document.getElementById) {
+		cs = document.getElementById('currentSlide');
+	} else {
+		cs = document.currentSlide;
+	}
+	cs.innerHTML = '<span id="csHere">' + snum + '<\/span> ' + 
+		'<span id="csSep">\/<\/span> ' + 
+		'<span id="csTotal">' + (smax-1) + '<\/span>';
+	if (snum == 0) {
+		cs.style.visibility = 'hidden';
+	} else {
+		cs.style.visibility = 'visible';
+	}
+}
+
+function go(inc) {
+	if (document.getElementById("slideProj").disabled) return;
+	var cid = 'slide' + snum;
+	if (inc != 'j') {
+		snum += inc;
+		lmax = smax - 1;
+		if (snum > lmax) snum = 0;
+		if (snum < 0) snum = lmax;
+	} else {
+		snum = parseInt(document.getElementById('jumplist').value);
+	}
+	var nid = 'slide' + snum;
+	var ne = document.getElementById(nid);
+	if (!ne) {
+		ne = document.getElementById('slide0');
+		snum = 0;
+	}
+	document.getElementById(cid).style.visibility = 'hidden';
+	ne.style.visibility = 'visible';
+	document.getElementById('jumplist').selectedIndex = snum;
+	currentSlide();
+}
+
+function toggle() {
+    var slideColl = GetElementsWithClassName('div','slide');
+    var obj = document.getElementById('slideProj');
+    if (!obj.disabled) {
+        obj.disabled = true;
+        for (n = 0; n < smax; n++) {
+            var slide = slideColl[n];
+            slide.style.visibility = 'visible';
+        }
+    } else {
+        obj.disabled = false;
+        for (n = 0; n < smax; n++) {
+            var slide = slideColl[n];
+            slide.style.visibility = 'hidden';
+        }
+        slideColl[snum].style.visibility = 'visible';
+    }
+}
+
+function showHide(action) {
+	var obj = document.getElementById('jumplist');
+	switch (action) {
+	case 's': obj.style.visibility = 'visible'; break;
+	case 'h': obj.style.visibility = 'hidden'; break;
+	case 'k':
+		if (obj.style.visibility != 'visible') {
+			obj.style.visibility = 'visible';
+		} else {
+			obj.style.visibility = 'hidden';
+		}
+	break;
+	}
+}
+
+// 'keys' code adapted from MozPoint (http://mozpoint.mozdev.org/)
+function keys(key) {
+	if (!key) {
+		key = event;
+		key.which = key.keyCode;
+	}
+ 	switch (key.which) {
+		case 10: // return
+		case 13: // enter
+			if (window.event && isParentOrSelf(window.event.srcElement, "controls")) return;
+			if (key.target && isParentOrSelf(key.target, "controls")) return;
+		case 32: // spacebar
+		case 34: // page down
+		case 39: // rightkey
+		case 40: // downkey
+			go(1);
+			break;
+		case 33: // page up
+		case 37: // leftkey
+		case 38: // upkey
+			go(-1);
+			break;
+		case 84: // t
+			toggle();
+			break;
+		case 67: // c
+			showHide('k');
+			break;
+	}
+}
+
+function clicker(e) {
+	var target;
+	if (window.event) {
+		target = window.event.srcElement;
+		e = window.event;
+	} else target = e.target;
+ 	if (target.href != null || isParentOrSelf(target, 'controls')) return true;
+	if (!e.which || e.which == 1) go(1);
+}
+
+function slideJump() {
+	if (window.location.hash == null) return;
+	var sregex = /^#slide(\d+)$/;
+	var matches = sregex.exec(window.location.hash);
+	var dest = null;
+	if (matches != null) {
+		dest = parseInt(matches[1]);
+	} else {
+		var target = window.location.hash.slice(1);
+		var targetElement = null;
+		var aelements = document.getElementsByTagName("a");
+		for (i = 0; i < aelements.length; i++) {
+			var aelement = aelements[i];
+			if ( (aelement.name && aelement.name == target)
+			 || (aelement.id && aelement.id == target) ) {
+				targetElement = aelement;
+				break;
+			}
+		}
+		while(targetElement != null && targetElement.nodeName != "body") {
+			if (targetElement.className == "slide") break;
+			targetElement = targetElement.parentNode;
+		}
+		if (targetElement != null && targetElement.className == "slide") {
+			dest = parseInt(targetElement.id.slice(1));
+		}
+	}
+	if (dest != null)
+		go(dest - snum);
+ }
+ 
+function createControls() {
+	controlsDiv = document.getElementById("controls");
+	if (!controlsDiv) return;
+	controlsDiv.innerHTML = '<form action="#" id="controlForm">' +
+	'<div>' +
+	'<a accesskey="t" id="toggle" href="javascript:toggle();">&#216;<\/a>' +
+	'<a accesskey="z" id="prev" href="javascript:go(-1);">&laquo;<\/a>' +
+	'<a accesskey="x" id="next" href="javascript:go(1);">&raquo;<\/a>' +
+	'<\/div>' +
+	'<div onmouseover="showHide(\'s\');" onmouseout="showHide(\'h\');"><select id="jumplist" onchange="go(\'j\');"><\/select><\/div>' +
+	'<\/form>';
+}
+
+function notOperaFix() {
+	var obj = document.getElementById('slideProj');
+	obj.setAttribute('media','screen');
+	if (isGe) {
+		obj.setAttribute('href','null');   // Gecko fix
+		obj.setAttribute('href',slideCSS); // Gecko fix
+	}
+}
+
+function startup() {
+	if (!isOp) createControls();
+	slideLabel();
+	if (!isOp) {		
+		notOperaFix();
+		slideJump();
+		document.onkeyup = keys;
+		document.onclick = clicker;
+	}
+}
+
+window.onload = startup;