<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<title>สำนักงานส่งเสริมการเรียนรู้จังหวัดกระบี่</title>

<style>
#slideshow{
    background-color:#ffffff;
    border:1px solid #FFFFFF;
    height:410px;
    margin:55px auto 0;
    position: relative;
    width:800px;

    -moz-box-shadow:0 0 22px #111;
    -webkit-box-shadow:0 0 22px #111;
    box-shadow:0 0 22px #111;
}

#slideshow ul{
    height:395px;
    left:0px;
    list-style:none outside none;
    overflow:hidden;
    position:relative;
    top:14px;
    width:900px;
}

#slideshow li{
    position:absolute;
    display:none;
    z-index:10;
}

#slideshow li:first-child{
    display:block;
    z-index:1000;
}

#slideshow .slideActive{
    z-index:1000;
}

#slideshow canvas{
    display:none;
    position:absolute;
    z-index:100;
}

#slideshow .arrow{
    height:86px;
    width:60px;
    position:absolute;
    background:url('') no-repeat;
    top:50%;
    margin-top:-43px;
    cursor:pointer;
    z-index:5000;
}

#slideshow .previous{ background-position:left top;left:0;}
#slideshow .previous:hover{ background-position:left bottom;}

#slideshow .next{ background-position:right top;right:0;}
#slideshow .next:hover{ background-position:right bottom;}
a:link {
	text-decoration: none;
}
a:visited {
	text-decoration: none;
}
a:hover {
	text-decoration: none;
}
a:active {
	text-decoration: none;
}
</style>

</head>

<body>

<div id="slideshow">

    <ul class="slides">
        <li><img src="kansueksa.jpg" width="720" height="380" alt="" /></li>
    </ul>
</div>

<div class="space-16"></div>

<p>
<div align="center"><br>
<a href="/index.php"><font size=6> เข้าสู่เว็บเก่า </font></a> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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</div>
<div align="center"><br>

</p>
<div align="center">
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</p>


<div align="center">
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
  <script src="script.js"></script>
</div>
<script>
$(window).load(function(){

    // We are listening to the window.load event, so we can be sure
    // that the images in the slideshow are loaded properly.

    // Testing wether the current browser supports the canvas element:
    var supportCanvas = 'getContext' in document.createElement('canvas');

    // The canvas manipulations of the images are CPU intensive,
    // this is why we are using setTimeout to make them asynchronous
    // and improve the responsiveness of the page.

    var slides = $('#slideshow li'),
        current = 0,
        slideshow = {width:0,height:0};

    setTimeout(function(){

        if(supportCanvas){
            $('#slideshow img').each(function(){

                if(!slideshow.width){
                    // Saving the dimensions of the first image:
                    slideshow.width = this.width;
                    slideshow.height = this.height;
                }

                // Rendering the modified versions of the images:
                createCanvasOverlay(this);
            });
        }

        $('#slideshow .arrow').click(function(){
            var li            = slides.eq(current),
                canvas        = li.find('canvas'),
                nextIndex    = 0;

            // Depending on whether this is the next or previous
            // arrow, calculate the index of the next slide accordingly.

            if($(this).hasClass('next')){
                nextIndex = current >= slides.length-1 ? 0 : current+1;
            }
            else {
                nextIndex = current <= 0 ? slides.length-1 : current-1;
            }

            var next = slides.eq(nextIndex);

            if(supportCanvas){

                // This browser supports canvas, fade it into view:

                canvas.fadeIn(function(){

                    // Show the next slide below the current one:
                    next.show();
                    current = nextIndex;

                    // Fade the current slide out of view:
                    li.fadeOut(function(){
                        li.removeClass('slideActive');
                        canvas.hide();
                        next.addClass('slideActive');
                    });
                });
            }
            else {

                // This browser does not support canvas.
                // Use the plain version of the slideshow.

                current=nextIndex;
                next.addClass('slideActive').show();
                li.removeClass('slideActive').hide();
            }
        });

    },100);
	
	  // This function takes an image and renders
    // a version of it similar to the Overlay blending
    // mode in Photoshop.

    function createCanvasOverlay(image){

        var canvas            = document.createElement('canvas'),
            canvasContext    = canvas.getContext("2d");

        // Make it the same size as the image
        canvas.width = slideshow.width;
        canvas.height = slideshow.height;

        // Drawing the default version of the image on the canvas:
        canvasContext.drawImage(image,0,0);

        // Taking the image data and storing it in the imageData array:
        var imageData    = canvasContext.getImageData(0,0,canvas.width,canvas.height),
            data        = imageData.data;

        // Loop through all the pixels in the imageData array, and modify
        // the red, green, and blue color values.

        for(var i = 0,z=data.length;i<z;i++){

            // The values for red, green and blue are consecutive elements
            // in the imageData array. We modify the three of them at once:

            data[i] = ((data[i] < 128) ? (2*data[i]*data[i] / 255) :
                        (255 - 2 * (255 - data[i]) * (255 - data[i]) / 255));
            data[++i] = ((data[i] < 128) ? (2*data[i]*data[i] / 255) :
                        (255 - 2 * (255 - data[i]) * (255 - data[i]) / 255));
            data[++i] = ((data[i] < 128) ? (2*data[i]*data[i] / 255) :
                        (255 - 2 * (255 - data[i]) * (255 - data[i]) / 255));

            // After the RGB channels comes the alpha value, which we leave the same.
            ++i;
        }

        // Putting the modified imageData back on the canvas.
        canvasContext.putImageData(imageData,0,0,0,0,imageData.width,imageData.height);

        // Inserting the canvas in the DOM, before the image:
        image.parentNode.insertBefore(canvas,image);
    }

});
	</script>
</body>

</html>