scythargon/gist:589fdf8cf5b8b435c680

## gistfile1.txt
<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>CodePen - Modern HTML5 Lightbox in 12 Lines of JavaScript</title>

  <style>
  dialog {
    position: fixed;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
    margin: auto;
    border: solid;
    padding: 1em;
    background: white;
    color: black;
    display: none;
    opacity: 0;
    border: none;
}
dialog[open] {
    display: block;
}
.backdrop {
    position: fixed;
    background-color: rgba(0,0,0,0.1);
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}
@-webkit-keyframes fadeToNearBlack {
  to { background: rgba(0,0,0,0.4); }
}
@keyframes fadeToNearBlack {
  to { background: rgba(0,0,0,0.4); }
}
@-webkit-keyframes goBig {
  to { opacity: 1; }
}
@keyframes goBig {
  to { opacity: 1; }
}
body { min-height: 100vh; }
nav#thumbs {
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
}
nav#thumbs a {
  display: block; -webkit-box-flex: 1; -webkit-flex: 1; -ms-flex: 1; flex: 1;
}
nav#thumbs a img {
  width: 100%; height: auto;
}
dialog button {
  border: none;
  background: none;
  font-size: 1.2rem;
}
dialog[open] {
  -webkit-animation: goBig .6s forwards;
  max-width: 700px;
}
dialog[open]::backdrop {
  -webkit-animation: fadeToNearBlack .6s forwards;
}
.backdrop {
  -webkit-animation: fadeToNearBlack .6s forwards;
}
dialog img {
  width: 100%; height: auto;
}
  </style>


</head>
<body>


  <nav id="thumbs">
  <a href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/elephant.jpg"><img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/elephant-thumb.jpg" alt=""></a>
  <a href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/taj-mahal.jpg"><img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/taj-mahal-thumb.jpg" alt=""></a>
  <a href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/wise-man.jpg"><img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/wise-man-thumb.jpg" alt="wise-man-thumb"></a>
</nav>
<dialog id="cover">
    <img src="" alt="">
      <button id="closecover">Close</button>
</dialog>

  <script src="http://demosthenes.info/assets/scripts/extras/dialog-polyfill.js"></script>


  <script>

function close_dialog() {
    coverimage.setAttribute('src', '');
    cover.close();
    document.removeEventListener('click', close_dialog);
}

function showImage(e) {
    e.preventDefault();
    e.stopPropagation();
    coverimage.setAttribute('src', this.getAttribute('href'));
    coverimage.setAttribute('alt', this.querySelector('img').getAttribute('alt'));
    cover.showModal();
    document.addEventListener('click', close_dialog);
}


var imglinks = document.getElementById('thumbs').getElementsByTagName('a'), cover = document.getElementById('cover'), coverimage = cover.getElementsByTagName('img')[0], testdialog = document.createElement('dialog');
testdialog.setAttribute('open', '');
if (!testdialog.open) {
    dialogPolyfill.registerDialog(cover);
}
for (var i = 0; i < imglinks.length; i++) {
    imglinks[i].onclick = showImage;
}
    //@ sourceURL=pen.js
  </script>
</body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8">
	<title>CodePen - Modern HTML5 Lightbox in 12 Lines of JavaScript</title>

	<style>
	dialog {
	position: fixed;
	left: 50%;
	top: 50%;
	-webkit-transform: translate(-50%, -50%);
	margin: auto;
	border: solid;
	padding: 1em;
	background: white;
	color: black;
	display: none;
	opacity: 0;
	border: none;
	}
	dialog[open] {
	display: block;
	}
	.backdrop {
	position: fixed;
	background-color: rgba(0,0,0,0.1);
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	}
	@-webkit-keyframes fadeToNearBlack {
	to { background: rgba(0,0,0,0.4); }
	}
	@keyframes fadeToNearBlack {
	to { background: rgba(0,0,0,0.4); }
	}
	@-webkit-keyframes goBig {
	to { opacity: 1; }
	}
	@keyframes goBig {
	to { opacity: 1; }
	}
	body { min-height: 100vh; }
	nav#thumbs {
	display: -webkit-box;
	display: -webkit-flex;
	display: flex;
	}
	nav#thumbs a {
	display: block; -webkit-box-flex: 1; -webkit-flex: 1; -ms-flex: 1; flex: 1;
	}
	nav#thumbs a img {
	width: 100%; height: auto;
	}
	dialog button {
	border: none;
	background: none;
	font-size: 1.2rem;
	}
	dialog[open] {
	-webkit-animation: goBig .6s forwards;
	max-width: 700px;
	}
	dialog[open]::backdrop {
	-webkit-animation: fadeToNearBlack .6s forwards;
	}
	.backdrop {
	-webkit-animation: fadeToNearBlack .6s forwards;
	}
	dialog img {
	width: 100%; height: auto;
	}
	</style>


	</head>
	<body>


	<nav id="thumbs">
	<a href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/elephant.jpg"><img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/elephant-thumb.jpg" alt=""></a>
	<a href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/taj-mahal.jpg"><img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/taj-mahal-thumb.jpg" alt=""></a>
	<a href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/wise-man.jpg"><img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/4273/wise-man-thumb.jpg" alt="wise-man-thumb"></a>
	</nav>
	<dialog id="cover">
	<img src="" alt="">
	<button id="closecover">Close</button>
	</dialog>

	<script src="http://demosthenes.info/assets/scripts/extras/dialog-polyfill.js"></script>



	<script>

	function close_dialog() {
	coverimage.setAttribute('src', '');
	cover.close();
	document.removeEventListener('click', close_dialog);
	}

	function showImage(e) {
	e.preventDefault();
	e.stopPropagation();
	coverimage.setAttribute('src', this.getAttribute('href'));
	coverimage.setAttribute('alt', this.querySelector('img').getAttribute('alt'));
	cover.showModal();
	document.addEventListener('click', close_dialog);
	}


	var imglinks = document.getElementById('thumbs').getElementsByTagName('a'), cover = document.getElementById('cover'), coverimage = cover.getElementsByTagName('img')[0], testdialog = document.createElement('dialog');
	testdialog.setAttribute('open', '');
	if (!testdialog.open) {
	dialogPolyfill.registerDialog(cover);
	}
	for (var i = 0; i < imglinks.length; i++) {
	imglinks[i].onclick = showImage;
	}
	//@ sourceURL=pen.js
	</script>
	</body>
	</html>