JavaScript - Js Next And Prev On Html5 Slideshow

//Adapt page to HTML5
    function changeNodeName(element, newNodeName) {
        var oldNode = element,
			    newNode = document.createElement(newNodeName),
			    node,
			    nextNode;

        node = oldNode.firstChild;
        while (node) {
            nextNode = node.nextSibling;
            newNode.appendChild(node);
            node = nextNode;
        }
        for (var i = 0; i < oldNode.attributes.length; i++) {
            newNode.setAttribute(oldNode.attributes[i].name, oldNode.attributes[i].value);
        }
        
        oldNode.parentNode.replaceChild(newNode, oldNode);
    }
    try {
        var theBody = document.getElementsByTagName("body")[0];
        var classNames = ["article", "aside", "command", "details", "summary", "figure", "figcaption", "footer", "header", "mark", "meter", "nav", "progress", "ruby", "rt", "rp", "section", "time", "wbr"];
        for (var i = 0; i < classNames.length; i++) {
            htmlFourElements = document.getElementsByClassName(classNames[i], theBody);
            for (var ii = 0; ii < htmlFourElements.length; ii++) {
                changeNodeName(htmlFourElements[ii], classNames[i]);
            }
        }
    } catch(e) {
        console.error(e.message);
    }

(function() {
	
	// Dimensions of the whole book
	var BOOK_WIDTH = 880;
	var BOOK_HEIGHT = 460;
	
	// Dimensions of one page in the book
	var PAGE_WIDTH = 428;
	var PAGE_HEIGHT = 450;
	
	// Vertical spacing between the top edge of the book and the papers
	var PAGE_Y = ( BOOK_HEIGHT - PAGE_HEIGHT ) / 2;
	
	// The canvas size equals to the book dimensions + this padding
	var CANVAS_PADDING = 30;
	
	var page = 0;
	
	var canvas = document.getElementById( "pageflip-canvas" );
	var context = canvas.getContext( "2d" );
	
	var mouse = { x: 0, y: 0 };
	
	var flips = [];
	
	var book = document.getElementById( "book" );
	
	// List of all the page elements in the DOM
	var pages = book.getElementsByTagName( "section" );
	
	// Organize the depth of our pages and create the flip definitions
	for( var i = 0, len = pages.length; i < len; i++ ) {
		pages[i].style.zIndex = len - i;
		
		flips.push( {
			// Current progress of the flip (left -1 to right +1)
			progress: 1,
			// The target value towards which progress is always moving
			target: 1,
			// The page DOM element related to this flip
			page: pages[i], 
			// True while the page is being dragged
			dragging: false
		} );
	}
	
	// Resize the canvas to match the book size
	canvas.width = BOOK_WIDTH + ( CANVAS_PADDING * 2 );
	canvas.height = BOOK_HEIGHT + ( CANVAS_PADDING * 2 );
	
	// Offset the canvas so that it's padding is evenly spread around the book
	canvas.style.top = -CANVAS_PADDING + "px";
	canvas.style.left = -CANVAS_PADDING + "px";
	
	// Render the page flip 60 times a second
	setInterval( render, 1000 / 60 );
	
	document.addEventListener( "mousemove", mouseMoveHandler, true );
	document.addEventListener( "mousedown", mouseDownHandler, true );
	document.addEventListener( "mouseup", mouseUpHandler, false );
	
	function mouseMoveHandler( event ) {
		// Offset mouse position so that the top of the spine is 0,0
		mouse.x = event.clientX - book.offsetLeft - ( BOOK_WIDTH / 2 );
		mouse.y = event.clientY - book.offsetTop;
	}
	
function mouseDownHandler( event ) {
// Make sure the mouse pointer is inside of the book
if (Math.abs(mouse.x) < PAGE_WIDTH) {
if (mouse.x < 0 && (page - 1) >= 0) {
// We are on the left side, drag the previous page
flips[page - 1].dragging = true;
selPage=page-1;
}
else if (mouse.x > 0 && (page + 1) < flips.length) {
// We are on the right side, drag the current page
flips[page].dragging = true;
selPage=page;

}
}
// Prevents the text selection
event.preventDefault();
}

function mouseUpHandler( event ) {
for( var i = 0; i < flips.length; i++ ) {
// If this flip was being dragged, animate to its destination
if( flips[i].dragging ) {
// Figure out which page we should navigate to
if( mouse.x < 0 ) {
flips[i].target = -1;
if (selPage == page) page = Math.min( page + 1, flips.length );
}
else {
flips[i].target = 1;
if (selPage != page ) page = Math.max( page - 1, 0 );
}
}
flips[i].dragging = false;
}
} 
	
	function render() {
		
		context.clearRect( 0, 0, canvas.width, canvas.height );
		
		for (var i = 0; i < flips.length; i++) {
			var flip = flips[i];
			
			if( flip.dragging ) {
				flip.target = Math.max( Math.min( mouse.x / PAGE_WIDTH, 1 ), -1 );
			}
			
			flip.progress += ( flip.target - flip.progress ) * 0.2;
			
			// If the flip is being dragged or is somewhere in the middle of the book, render it
			if( flip.dragging || Math.abs( flip.progress ) < 0.997 ) {
				drawFlip( flip );
				
      
          
          
}

			
		}
		
	}

	function drawFlip( flip ) {
		// Strength of the fold is strongest in the middle of the book
		var strength = 1 - Math.abs( flip.progress );
		if (strength < 0.01) strength=0.01;
		// Width of the folded paper
		var foldWidth = ( PAGE_WIDTH * 0.5 ) * ( 1 - flip.progress );
		
		// X position of the folded paper
		var foldX = PAGE_WIDTH * flip.progress + foldWidth;
		
		// How far the page should outdent vertically due to perspective
		var verticalOutdent = 20 * strength;
		
		// The maximum width of the left and right side shadows
		var paperShadowWidth = ( PAGE_WIDTH ) * Math.max( Math.min( 1 - flip.progress, 0.5 ), 0 );
		var rightShadowWidth = ( PAGE_WIDTH ) * Math.max( Math.min( strength, 0.5 ), 0 );
		var leftShadowWidth = ( PAGE_WIDTH ) * Math.max( Math.min( strength, 0.5 ), 0 );
		
		
		// Change page element width to match the x position of the fold
		flip.page.style.width = Math.max(foldX, 0) + "px";
		
		context.save();
		context.translate( CANVAS_PADDING + ( BOOK_WIDTH / 2 ), PAGE_Y + CANVAS_PADDING );
		
		
		// Draw a sharp shadow on the left side of the page
		context.strokeStyle = 'rgba(0,0,0,'+(0.05 * strength)+')';
		context.lineWidth = 30 * strength;
		context.beginPath();
		context.moveTo(foldX - foldWidth, -verticalOutdent * 0.5);
		context.lineTo(foldX - foldWidth, PAGE_HEIGHT + (verticalOutdent * 0.5));
		context.stroke();
		
		
		// Right side drop shadow
		var rightShadowGradient = context.createLinearGradient(foldX, 0, foldX + rightShadowWidth, 0);
		rightShadowGradient.addColorStop(0, 'rgba(0,0,0,'+(strength*0.2)+')');
		rightShadowGradient.addColorStop(0.8, 'rgba(0,0,0,0.0)');
		
		context.fillStyle = rightShadowGradient;
		context.beginPath();
		context.moveTo(foldX, 0);
		context.lineTo(foldX + rightShadowWidth, 0);
		context.lineTo(foldX + rightShadowWidth, PAGE_HEIGHT);
		context.lineTo(foldX, PAGE_HEIGHT);
		context.fill();
		
		
		// Left side drop shadow
		var leftShadowGradient = context.createLinearGradient(foldX - foldWidth - leftShadowWidth, 0, foldX - foldWidth, 0);
		leftShadowGradient.addColorStop(0, 'rgba(0,0,0,0.0)');
		leftShadowGradient.addColorStop(1, 'rgba(0,0,0,'+(strength*0.15)+')');
		
		context.fillStyle = leftShadowGradient;
		context.beginPath();
		context.moveTo(foldX - foldWidth - leftShadowWidth, 0);
		context.lineTo(foldX - foldWidth, 0);
		context.lineTo(foldX - foldWidth, PAGE_HEIGHT);
		context.lineTo(foldX - foldWidth - leftShadowWidth, PAGE_HEIGHT);
		context.fill();
		
		
		// Gradient applied to the folded paper (highlights & shadows)
		var foldGradient = context.createLinearGradient(foldX - paperShadowWidth, 0, foldX, 0);
		foldGradient.addColorStop(0.35, '#fafafa');
		foldGradient.addColorStop(0.73, '#eeeeee');
		foldGradient.addColorStop(0.9, '#fafafa');
		foldGradient.addColorStop(1.0, '#e2e2e2');
		
		context.fillStyle = foldGradient;
		context.strokeStyle = 'rgba(0,0,0,0.06)';
		context.lineWidth = 0.5;
		
		// Draw the folded piece of paper
		context.beginPath();
		context.moveTo(foldX, 0);
		context.lineTo(foldX, PAGE_HEIGHT);
		context.quadraticCurveTo(foldX, PAGE_HEIGHT + (verticalOutdent * 2), foldX - foldWidth, PAGE_HEIGHT + verticalOutdent);
		context.lineTo(foldX - foldWidth, -verticalOutdent);
		context.quadraticCurveTo(foldX, -verticalOutdent * 2, foldX, 0);
		
		context.fill();
		context.stroke();
		
		
		context.restore();
	}
	
})();

<script>
function playAnim1(){

          var comp = $.Edge.getComposition("page1");
          var stage = comp.getStage();
          stage.play("play1");
}

$(document).ready(function(){
          setTimeout(playAnim1, 1000);

}); 

function playAnim2(){

          var comp = $.Edge.getComposition("page2");
          var stage = comp.getStage();
          stage.play("play2");
}

$(document).ready(function(){
          setTimeout(playAnim2, 1000);

});
function playAnim3(){

          var comp = $.Edge.getComposition("page3");
          var stage = comp.getStage();
          stage.play("play3");
}

$(document).ready(function(){
          setTimeout(playAnim3, 1000);

});
</script>

<div id="slider" class="span-24 last">
            
                <div id="slide2Left"> &larr;</div>
                    <div id="slideFrame">
                        <div id="slideBoard">
                          <!-- the slides -->
                            <div class="slidePoint">
                             Slide 1 Goes Here
                            </div>
                            <div class="slidePoint">
                             Slide 2 Goes Here
                            </div>
                            <div class="slidePoint">
                             Slide 3 Goes Here
                            </div>
                          <!-- end slideBoard -->
                        </div>
                        <div id="slideReference"></div>
                    <!-- end slideFrame -->
                    </div>
<div id="slide2Right" class="last"> &rarr;</div>
                
        <!-- end slider section -->    
        </div>

// JavaScript Document
$(document).ready(function(){						
	var slideTime = 700;
	var currentSlide = 1;
	var totalSlides = $("#slideBoard > div").size();
	var slideWidth = $('#slideFrame').css('width');
	var slideAmount = parseInt(slideWidth);
	function slideLeft(){
		if(currentSlide > 1){
			$("#slideBoard").animate({
				left: ['+='+slideAmount, 'swing']
				}, slideTime );
			currentSlide += -1;
		}
	}
	function slideRight(){
		if(currentSlide < totalSlides){
			$("#slideBoard").animate({ 
				left: ['+=-'+slideAmount, 'swing']
				}, slideTime );
			currentSlide += 1;
		}
	}
	function slideTo(slideNumber){
		///*
		slideNumber = parseInt(slideNumber);
		slidePos = slideNumber -1;
		var p1 = $('#slideBoard');
		var position1 = p1.position();
		
		var p2 = $('#slideBoard div:nth-child(' + slideNumber + ')');
		//alert(p2.html());
		var position2 = p2.position();
		var slideFor = 	(-position1.left) - position2.left;

		//alert('p1: '+ position1.left + ' p2: '+ position2.left + ' Sliding: '+slideFor);
		$("#slideBoard").animate({ 
			left: ['+='+slideFor, 'swing']
			}, slideTime );
		currentSlide = slideNumber;
		
		//*/
	}
	$('#slide2Left').click(function(){
		slideLeft();
	});
	$('#slide2Right').click(function(){
		slideRight();
	});
	
	$(document).keydown(function(e){
		 if(e.keyCode == 37){ 
			 //alert( "left pressed" );
			slideLeft();
			return false;
		 }
		 if(e.keyCode == 39){ 
			 //alert( "rigt pressed" );
			slideRight();
			return false;
		 }
	});

	//# Slide Reference Tool
	for(i = 1; i < (totalSlides+1); i++){
		$('#slideReference').append('<div class="slideNumber">'+i+'</div>');
	}
	$('.slideNumber').click(function(){
		slideTo($(this).html());
	});
	$(".slidePoint").touchwipe({
     wipeLeft: function() { 	slideRight(); },
     wipeRight: function() { 	slideLeft(); },
     min_move_x: 20,
     preventDefaultEvents: true
	});
});

/* CSS Document */
					#slider {
						position: relative;
						margin: 79px 0 50px 0;
						height: 500px;
						padding-bottom: 50px;
						border-bottom: 1px solid #9B9B9B;
					}
					#slideFrame { 
						width:870px;
						left: 40px;
						min-height:460px;
						height:460px;
						overflow:hidden;
						position:relative;
						border:#CCC solid 0px;
					}
					#test { 
						width:30px; 
						min-height:460px;
						height:460px;
						overflow:hidden;
						position:relative;
						border:#CCC solid 0px;
					}
					#slideBoard {
						position:absolute;
						top:0px;
						left:0px;
						width:3000px;
						min-height:400px;	
						margin:0px;
						padding:0px;
						background: #ccc;
						opacity: .3;
					}
					.slidePoint {
						width:870px; 
						min-height:400px;
						height:410px;
						display:inline-block;
						margin:0px;
						padding:0xp;
						float:left;
					}
					.slidePoint p {
						padding:5px;
					}
					#slide2Left, #slide2Right{
						position:absolute;
						top: 200px;
						bottom: 5px;
						cursor:pointer;
						width:20px;
						height:20px;
						color:#9B9B9B;
						border:#9B9B9B solid 1px;
						border-radius: 5px;
						padding:3px;
						text-align:center;
						display: inline-block;
					}
					#slide2Right{
						left: 920px;
					}
					
					#slideReference {
						position:absolute;
						width: 770px;
						min-height:10px;
						bottom:5px;
						left:50px;
						text-align:center;
					}
					.slideNumber {
						border-radius: 2px;
						background:#929292;
						color:#ffffff;
						cursor:pointer;
						display:inline-block;
						padding:3px;
						margin:3px;
						text-align:center;
						min-height:15px;
						min-width:15px;
					}

<div id="randomdiv1" class="article_example_div">
<embed src="Black Hawk Down - Music Video - Riot.mp3" width=25 height=25 autostart=false repeat=true loop=true></embed>
</div>

<!doctype html>
<head>
<meta charset=UTF-8" />
<title>Crazy Rally - France</title>
<script type="text/javascript">
var frames = new Array();
	
//load frames into array
for(var i = 1; i < 417; i++){
	frames[i] = new Image(480,320);
	frames[i].src = "track" + i + ".png";
}

//playback
var currentFrameNumber = 1;
var fps = 30; // frames / second
const speed = 1000 / fps; // milliseconds
//var speed = 33;
      
function nextFrame( )
{
      	document.getElementById("display").src = frames[currentFrameNumber].src;
	currentFrameNumber = ( currentFrameNumber + 1 ) % frames.length;
       	setTimeout( nextFrame, speed );
}
window.onload = nextFrame;
</script>
</head>
<body>
<img id="display" src="track1.png" width="480" height="320">
</body>
</html>

<script type="text/javascript">

function testSupport() {  
if (localStorage)  {return "Local Storage: Supported"}
else  {
return "Local Storage: NOT supported";  
}
} 

alert ( testSupport() );
</script>

localStorage.setItem("name", "Hello World!"); 
alert(localStorage.getItem("name"));

var duration = document.getElementById('vid').duration

var buffered = document.getElementById('vid').buffered

function calcProgress()
{
var num1 = Number(document.form.num1.value);
var num2 = Number(document.form.num2.value);
	Number(document.form.progress.value) = num1
	Number(document.form.progress.max) = num2;
}

<form name="form">

<input name="num1" onChange="calcProgress()" type="text" value="0" /> / <input name="num2" type="text" value="0" onChange="calcProgress()" size="1">
<br>
<progress name="progress" id="progress" min="0" value="0" max=""></progress>
</form>

<html><head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
<title>Sketch Book v1.0</title>

<script src="SketchBook.js" type="text/javascript"></script>
<script src="JSxpcom.js" language="text/javascript"></script>




</head>
<body onLoad="Init();">
<div id="SketchPageView">
<canvas id="SketchPage" width="480" height="640" style="background: #C7C1A3; position: absolute; top: 0px; left: 0px;" onmousedown="Draw(this, event);"></canvas>
</div>

<div id="Options" style="position: absolute; visibility: hidden; top: 100px; left: 50px;">

<table cellwidth="100" border="0" cellpadding="0" cellspacing="0" height="50">
<tbody><tr><td><img src="./Image/TL-black.PNG" height="19" width="19"></td><td bgcolor="#bce0f8"><center><b>Options</b></center><img src="./Image/delete.png" style="position:absolute; top: 2px; left: 150px; height: 18; width: 18;" onClick="HideOptions();"></td><td><img src="./Image/TR-black.PNG" height="19" width="19"></td></tr>
<tr><td bgcolor="#bce0f8"></td>

<td bgcolor="#bce0f8">

<div style="border: 1px solid black;">
<table>
<tbody><tr>
<td><center>Pen Size</center></td><td><center>Color</center></td>
</tr>
<tr>
<td>
<select id="GetPenSize" onchange="UpdatePenSize();">
  <option value="1">1 px</option>
  <option value="2">2 px</option>
  <option value="3">3 px</option>
  <option value="4">4 px</option>
  <option value="5">5 px</option>
</select>
</td>
<td>
<select id="GetPenColor" onchange="UpdatePenColor();">
  <option value="Black">Black</option>
  <option value="White">White</option>
  <option value="Red">Red</option>
  <option value="Blue">Blue</option>
  <option value="Green">Green</option>
  <option value="Brown">Brown</option>
</select>
</td>
</tr>
<tr>
<td><input value="Restore" onclick="RestoreData();" type="button"></td><td><input value="Backup" onclick="BackupData();" type="button"></td>
</tr>
<tr>
<td><input value="Encrypt" onclick="EncryptData();" type="button"></td><td><input value="DeCrypt" onclick="DecryptData();" type="button"></td>
</tr>
</tbody></table>
</div>

</td>
<td bgcolor="#bce0f8"></td></tr>
<tr><td><img src="./Image/BL-black.PNG" height="19" width="19"></td> <td bgcolor="#bce0f8"></td><td align="right"><img src="./Image/BR-black.PNG" height="19" width="19"></td></tr>
</tbody></table>
</div>

<table id="UI" style="position: absolute; top: 0px; left: 412px; visibility: visible;" border="0" cellpadding="0" cellspacing="0" width="40">
<tbody><tr><td><img src="./Image/TL-black.PNG" height="19" width="19"></td><td bgcolor="#bce0f8"></td><td><img src="./Image/TR-black.PNG" height="19" width="19"></td></tr>
<tr><td bgcolor="#bce0f8"></td>

<td bgcolor="#bce0f8" height="600">


<img src="./Image/up.png" style="width: 30px; height: 30px;" onclick="NextNote('up');"><br><br><br><br>
<img src="./Image/plus.png" style="width: 30px; height: 30px;" onclick="NewSketch();"><br><br><br><br>
<img src="./Image/save.png" style="width: 30px; height: 30px;" onclick="SaveSketch();"><br><br><br><br>
<img src="./Image/clear.png" style="width: 30px; height: 30px;" onclick="ClearSketch();"><br><br><br><br>
<img src="./Image/delete.png" style="width: 30px; height: 30px;" onclick="DeleteSketch();"><br><br><br><br>
<img src="./Image/gear.png" style="width: 30px; height: 30px;" onclick="ShowOptions();"><br><br>
<img src="./Image/down.png" style="width: 30px; height: 30px;" onclick="NextNote('down');">



</td>
<td bgcolor="#bce0f8"></td>       </tr>
<tr><td><img src="./Image/BL-black.PNG" height="19" width="19"></td> <td bgcolor="#bce0f8"></td>   <td align="right"><img src="./Image/BR-black.PNG" height="19" width="19"></td></tr>
</tbody></table>



</body></html>

var SketchDataFolder = "c:\\";
var PenSize = "3";
var PenShape = "Circle";
var PenColor = "Black";
var LoadFile = "";
var UIstatus = "visible";
var CurrentNote = 0;
var BGcolor = "#C7C1A3";
var DataPath = "\Data\\";
var FileList = [];
var SystemPath;
var UIstatus = "visible";
var Server = "localhost";

document.onkeyup = ToggleUI;

function Init()
{
 // Get the System Path
 GetSystemPath("SketchBook.html");
 
 // Load All Filenames of the DataPath directory into an array
 GetFileList(SystemPath + DataPath, FileList);
 
 //Load the first Note onto the canvas
   // if there are no notes in the directory, don't try to load anything
   if(FileList.length > 0)
      {
	   var NxtNote = LoadFromDisk(FileList[CurrentNote]);
	   
	   // Load the image data onto the canvas
       var canvas = document.getElementById("SketchPage");
       var context = canvas.getContext("2d");
       canvas.putImageData(NxtNote , 0 , 0 );
	  }
}

function HideOptions()
{
 document.getElementById("Options").style.visibility = "hidden";
}

function ToggleUI(e)
{
 var KeyID = (window.event) ? event.keyCode : e.keyCode;
 
 var KeyValue = 18;
 
 // Use a key to hide the toolbars so that most of the screen is used for the UI
 if(KeyID == KeyValue)
   {
    if(UIstatus == "visible")
	  {
	   UIstatus = "hidden";
	   document.getElementById("UI").style.visibility = "hidden";
	   return;
	  }
	if(UIstatus == "hidden")
	  {
	   UIstatus = "visible";
	   document.getElementById("UI").style.visibility = "visible";
	  }
   }
 
}

function ShowOptions()
{
 document.getElementById("Options").style.visibility = "visible";
}

function UpdatePenSize()
{
 PenSize = document.getElementById('GetPenSize').value;
}

function UpdatePenShape()
{
 PenShape = document.getElementById('GetPenShape').value;
}

function UpdatePenColor()
{
 PenColor = document.getElementById('GetPenColor').value;
}
	  
function Draw(element, event) 
{
  document.addEventListener("mousemove", PenHandler, true);
  document.addEventListener("mouseup", upHandler, true);

  event.stopPropagation();
  event.preventDefault();
	
  function PenHandler(event) 
  {
  
    var x = event.clientX;
	var y = event.clientY;
    
    // mouse event goes here
	var canvas = document.getElementById("SketchPage");
    var ctx = canvas.getContext("2d");

	if (PenShape ="Circle")
	   {
	    // This draws a circle
        ctx.fillStyle = PenColor;
        ctx.beginPath();
        ctx.arc(x, y, PenSize, 0, Math.PI*2, true);
        ctx.closePath();
        ctx.fill();
	   }
	 
    event.stopPropagation();
  }

  function upHandler(event) 
  {
    document.removeEventListener("mouseup", upHandler, true);     
    document.removeEventListener("mousemove", PenHandler, true);
    event.stopPropagation();
  }

}

function SaveSketch()
{
 // Get the current file name
 var FileName = SystemPath + DataPath + CurrentNote + ".img";

 var canvas = document.getElementById("SketchPage");
 var context = canvas.getContext("2d");
 var ImgData = context.getImageData(0, 0, canvas.width, canvas.height);

 alert(ImgData);
 // Write the PNG file to the disk
 SaveToDisk(FileName, ImageData);
}

function NextNote(Direction)
{
 if(Direction == "up")
    {
	 // Display the previoius note
	 CurrentNote--;
	    // Make sure you don't incrimnet to a non-existant note
		if(CurrentNote <= 0)
		  {
		   CurrentNote = FileList.length;
		  }
		  
	 var NxtNote = LoadFromDisk(SystemPath + DataPath + FileList[CurrentNote]);
	 
	 // Load the image data onto the canvas
	 var canvas = document.getElementById("SketchPage");
     var context = canvas.getContext("2d");
     canvas.putImageData(NxtNote , 0 , 0 );
	 return;
	}
	
 if(Direction == "down")
    {
	 //Display the Next note
	 CurrentNote++;
	 	// Make sure you don't incrimnet to a non-existant note
		if(CurrentNote > FileList.length)
		  {
		   CurrentNote = 0;
		  }
	 var NxtNote = LoadFromDisk(SystemPath + DataPath + FileList[CurrentNote]);
	 
	 // Load the image data onto the canvas
	 var canvas = document.getElementById("SketchPage");
     var context = canvas.getContext("2d");
     canvas.putImageData(NxtNote , 0 , 0 );
	 return;
	}
}


function DeleteNote()
{
 // Delete The current note
 DeleteFile(SystemPath + DataPath + FileList[CurrentNote]);
 
 // Reload the Directory List
    // Re-Dim the FileList Array
	FileList.length = 0;

  GetFileList(SystemPath + DataPath, FileList);

 // Load The Previous Note
 
 	 // Display the previoius note
	 CurrentNote--;
	    // Make sure you don't incrimnet to a non-existant note
		if(CurrentNote <= 0)
		  {
		   CurrentNote = FileList.length;
		  }
		  
	 var NxtNote = LoadFromDisk(FileList[CurrentNote]);
	 
	 // Load the image data onto the canvas
	 var canvas = document.getElementById("SketchPage");
     var context = canvas.getContext("2d");
     canvas.putImageData(NxtNote , 0 , 0 );
	 return;
 
}

function AddNote()
{
 // Add a note to the notebook and at the end of the File List
 // **** Later this function should be modified to be an INSERT function rather than just an add
 // Just incase the user needs to go back an edit and add more things to their notebook
}

function ClearSketch()
{
 // Clear the contents of the Canvas
 
 //Draw a rectangle that covers the canvas
 var canvas = document.getElementById("SketchPage");
 var ctx = canvas.getContext("2d");

 ctx.fillStyle = BGcolor;
 ctx.fillRect (0, 0, canvas.width, canvas.height);
}

function Crypt(method)
{
 // This function will Encrypt or Decrypt All the NoteData
 if(method == "encrypt")
   {
    
    return;
   }
 
 if(method == "decrypt")
   {
    
    return;
   }
}

function Archive(method)
{
 // This function will Restore or Backup all NoteData to a network resource
 if(method == "restore")
   {
    
    return;
   }
 
 if(method == "backup")
   {
    
    return;
   }
}
// ******************** These are the XPCOM Functions ************************

function GetSystemPath(ApplicationName)
{
 // This function should Detect the system directory of the app
 // and return that string as the  SystemPath variable
 // You must supply the filename of the HTML file that it is being called from
 // I suppose later i could add the code to detect the HTML's actual file name
 // It's on the ToDo List...
 
 var GetSysPath = self.location;
 GetSysPath = GetSysPath + "";
 Get = GetSysPath.replace("file:///" , "");
 Get = Get.replace(/\//g , "\\");
 Get = Get.replace(ApplicationName, "");
 SystemPath = Get;
 return SystemPath;
}

function DeleteFile(FileName)
{
 // Delete a local file
 netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
 var aFile = Components.classes["@mozilla.org/file/local;1"].createInstance();
 if (aFile instanceof Components.interfaces.nsILocalFile)
    {
     aFile.initWithPath(FileName);
     aFile.remove(false);
    }
}

function GetFileList(Directory, FileList)
{
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
var _nsILocalFile = Components.classes["@mozilla.org/file/local;1"]
      .createInstance(Components.interfaces.nsILocalFile);
// initialize path to work with
_nsILocalFile.initWithPath(Directory);
 
// get file interface implemenation
// this means that an XPCOM Class can implement multiple interface
var lv_oFile = _nsILocalFile.QueryInterface(Components.interfaces.nsIFile);
var lv_oEntries = lv_oFile.directoryEntries;
 
while(lv_oEntries.hasMoreElements())
{
   var lv_cFile = lv_oEntries.getNext()
     .QueryInterface(Components.interfaces.nsIFile).path;
   FileList.push(lv_cFile);
}
}

function SaveToDisk(filepath, content) {
	try {
		netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
	} catch (e) {
		alert("Permission to save file was denied.");
	}
	var file = Components.classes["@mozilla.org/file/local;1"]
		.createInstance(Components.interfaces.nsILocalFile);
	file.initWithPath( filepath );
	if ( file.exists() == false ) {
		file.create( Components.interfaces.nsIFile.NORMAL_FILE_TYPE, 420 );
	}
	var outputStream = Components.classes["@mozilla.org/network/file-output-stream;1"]
		.createInstance( Components.interfaces.nsIFileOutputStream );

	outputStream.init( file, 0x04 | 0x08 | 0x20, 420, 0 );
	var output = content;
	var result = outputStream.write( output, output.length );
	outputStream.close();
}

function LoadFromDisk(filePath)
{
 if(window.Components)
   try
   {
    netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
    var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
    file.initWithPath(filePath);
    if (!file.exists())
    return(null);
    var inputStream = Components.classes["@mozilla.org/network/file-input-stream;1"].createInstance(Components.interfaces.nsIFileInputStream);
    inputStream.init(file, 0x01, 00004, null);
    var sInputStream = Components.classes["@mozilla.org/scriptableinputstream;1"].createInstance(Components.interfaces.nsIScriptableInputStream);
    sInputStream.init(inputStream);
    return(sInputStream.read(sInputStream.available()));
   }
   catch(e)
   {
    //alert("Exception while attempting to load\n\n" + e);
    return(false);
   }
return(null);
}