damonp/html5-invoice.php

## html5-invoice.php
<!--
Credit: http://www.jonathantneal.com/blog/the-html5-invoice/
Rolled into single file for transportability.
-->
<!doctype html>
<html>
	<head>
		<meta charset="utf-8">
		<title>Invoice: #</title>
		<style>
/* reset */

*
{
	border: 0;
	box-sizing: content-box;
	color: inherit;
	font-family: inherit;
	font-size: inherit;
	font-style: inherit;
	font-weight: inherit;
	line-height: inherit;
	list-style: none;
	margin: 0;
	padding: 0;
	text-decoration: none;
	vertical-align: top;
}

/* content editable */

*[contenteditable] { border-radius: 0.25em; min-width: 1em; outline: 0; }

*[contenteditable] { cursor: pointer; }

*[contenteditable]:hover, *[contenteditable]:focus, td:hover *[contenteditable], td:focus *[contenteditable], img.hover { background: #DEF; box-shadow: 0 0 1em 0.5em #DEF; }

span[contenteditable] { display: inline-block; }

/* heading */

h1 { font: bold 100% sans-serif; letter-spacing: 0.5em; text-align: center; text-transform: uppercase; }

/* table */

table { font-size: 75%; table-layout: fixed; width: 100%; }
table { border-collapse: separate; border-spacing: 2px; }
th, td { border-width: 1px; padding: 0.5em; position: relative; text-align: left; }
th, td { border-radius: 0.25em; border-style: solid; }
th { background: #EEE; border-color: #BBB; }
td { border-color: #DDD; }

/* page */

html { font: 16px/1 'Open Sans', sans-serif; overflow: auto; padding: 0.5in; }
html { background: #999; cursor: default; }

body { box-sizing: border-box; height: 11in; margin: 0 auto; overflow: hidden; padding: 0.5in; width: 8.5in; }
body { background: #FFF; border-radius: 1px; box-shadow: 0 0 1in -0.25in rgba(0, 0, 0, 0.5); }

/* header */

header { margin: 0 0 3em; }
header:after { clear: both; content: ""; display: table; }

header h1 { background: #000; border-radius: 0.25em; color: #FFF; margin: 0 0 1em; padding: 0.5em 0; }
header address { float: left; font-size: 75%; font-style: normal; line-height: 1.25; margin: 0 1em 1em 0; }
header address p { margin: 0 0 0.25em; }
header span, header img { display: block; float: right; }
header span { margin: 0 0 1em 1em; max-height: 25%; max-width: 60%; position: relative; }
header img { max-height: 100%; max-width: 100%; }
header input { cursor: pointer; -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=0)"; height: 100%; left: 0; opacity: 0; position: absolute; top: 0; width: 100%; }

/* article */

article, article address, table.meta, table.inventory { margin: 0 0 3em; }
article:after { clear: both; content: ""; display: table; }
article h1 { clip: rect(0 0 0 0); position: absolute; }

article address { float: left; font-size: 125%; font-weight: bold; }

/* table meta & balance */

table.meta, table.balance { float: right; width: 36%; }
table.meta:after, table.balance:after { clear: both; content: ""; display: table; }

/* table meta */

table.meta th { width: 40%; }
table.meta td { width: 60%; }

/* table items */

table.inventory { clear: both; width: 100%; }
table.inventory th { font-weight: bold; text-align: center; }

table.inventory td:nth-child(1) { width: 26%; }
table.inventory td:nth-child(2) { width: 38%; }
table.inventory td:nth-child(3) { text-align: right; width: 12%; }
table.inventory td:nth-child(4) { text-align: right; width: 12%; }
table.inventory td:nth-child(5) { text-align: right; width: 12%; }

/* table balance */

table.balance th, table.balance td { width: 50%; }
table.balance td { text-align: right; }

/* aside */

aside h1 { border: none; border-width: 0 0 1px; margin: 0 0 1em; }
aside h1 { border-color: #999; border-bottom-style: solid; }

/* javascript */

.add, .cut
{
	border-width: 1px;
	display: block;
	font-size: .8rem;
	padding: 0.25em 0.5em;
	float: left;
	text-align: center;
	width: 0.6em;
}

.add, .cut
{
	background: #9AF;
	box-shadow: 0 1px 2px rgba(0,0,0,0.2);
	background-image: -moz-linear-gradient(#00ADEE 5%, #0078A5 100%);
	background-image: -webkit-linear-gradient(#00ADEE 5%, #0078A5 100%);
	border-radius: 0.5em;
	border-color: #0076A3;
	color: #FFF;
	cursor: pointer;
	font-weight: bold;
	text-shadow: 0 -1px 2px rgba(0,0,0,0.333);
}

.add { margin: -2.5em 0 0; }

.add:hover { background: #00ADEE; }

.cut { opacity: 0; position: absolute; top: 0; left: -1.5em; }
.cut { -webkit-transition: opacity 100ms ease-in; }

tr:hover .cut { opacity: 1; }

@media print {
	* { -webkit-print-color-adjust: exact; }
	html { background: none; padding: 0; }
	body { box-shadow: none; margin: 0; }
	span:empty { display: none; }
	.add, .cut { display: none; }
}

@page { margin: 0; }
		</style>
		<link rel="license" href="http://www.opensource.org/licenses/mit-license/">
	</head>
	<body>
		<header>
			<h1>Invoice</h1>
			<address contenteditable>
				<p>Acme Widgets</p>
				<p>123 Some Street<br>SomeCity, TX 10101</p>
				<p>{###) ###-####</p>
			</address>
			<span><img alt="" src="logo.png"><input type="file" accept="image/*"></span>
		</header>
		<article>
			<h1>Recipient</h1>
			<address contenteditable>
				<p>Some Company<br>c/o Some Guy</p>
			</address>
			<table class="meta">
				<tr>
					<th><span contenteditable>Invoice #</span></th>
					<td><span contenteditable>101001</span></td>
				</tr>
				<tr>
					<th><span contenteditable>Date</span></th>
					<td><span contenteditable><?php echo date('Y-m-d'); ?></span></td>
				</tr>
				<tr>
					<th><span contenteditable>Amount Due</span></th>
					<td><span id="prefix" contenteditable>$</span><span>600.00</span></td>
				</tr>
			</table>
			<table class="inventory">
				<thead>
					<tr>
						<th><span contenteditable>Item</span></th>
						<th><span contenteditable>Description</span></th>
						<th><span contenteditable>Rate</span></th>
						<th><span contenteditable>Quantity</span></th>
						<th><span contenteditable>Price</span></th>
					</tr>
				</thead>
				<tbody>
					<tr>
						<td><a class="cut">-</a><span contenteditable>Front End Consultation</span></td>
						<td><span contenteditable>Experience Review</span></td>
						<td><span data-prefix>$</span><span contenteditable>150.00</span></td>
						<td><span contenteditable>4</span></td>
						<td><span data-prefix>$</span><span>600.00</span></td>
					</tr>
				</tbody>
			</table>
			<a class="add">+</a>
			<table class="balance">
				<tr>
					<th><span contenteditable>Total</span></th>
					<td><span data-prefix>$</span><span>600.00</span></td>
				</tr>
				<tr>
					<th><span contenteditable>Amount Paid</span></th>
					<td><span data-prefix>$</span><span contenteditable>0.00</span></td>
				</tr>
				<tr>
					<th><span contenteditable>Balance Due</span></th>
					<td><span data-prefix>$</span><span>600.00</span></td>
				</tr>
			</table>
		</article>
		<aside>
			<h1><span contenteditable>Additional Notes</span></h1>
			<div contenteditable>
				<p>A finance charge of 1.5% will be made on unpaid balances after 30 days.</p>
			</div>
		</aside>
	<script>
/* Shivving (IE8 is not supported, but at least it won't look as awful)
/* ========================================================================== */

(function (document) {
	var
	head = document.head = document.getElementsByTagName('head')[0] || document.documentElement,
	elements = 'article aside audio bdi canvas data datalist details figcaption figure footer header hgroup mark meter nav output picture progress section summary time video x'.split(' '),
	elementsLength = elements.length,
	elementsIndex = 0,
	element;

	while (elementsIndex < elementsLength) {
		element = document.createElement(elements[++elementsIndex]);
	}

	element.innerHTML = 'x<style>' +
		'article,aside,details,figcaption,figure,footer,header,hgroup,nav,section{display:block}' +
		'audio[controls],canvas,video{display:inline-block}' +
		'[hidden],audio{display:none}' +
		'mark{background:#FF0;color:#000}' +
	'</style>';

	return head.insertBefore(element.lastChild, head.firstChild);
})(document);

/* Prototyping
/* ========================================================================== */

(function (window, ElementPrototype, ArrayPrototype, polyfill) {
	function NodeList() { [polyfill] }
	NodeList.prototype.length = ArrayPrototype.length;

	ElementPrototype.matchesSelector = ElementPrototype.matchesSelector ||
	ElementPrototype.mozMatchesSelector ||
	ElementPrototype.msMatchesSelector ||
	ElementPrototype.oMatchesSelector ||
	ElementPrototype.webkitMatchesSelector ||
	function matchesSelector(selector) {
		return ArrayPrototype.indexOf.call(this.parentNode.querySelectorAll(selector), this) > -1;
	};

	ElementPrototype.ancestorQuerySelectorAll = ElementPrototype.ancestorQuerySelectorAll ||
	ElementPrototype.mozAncestorQuerySelectorAll ||
	ElementPrototype.msAncestorQuerySelectorAll ||
	ElementPrototype.oAncestorQuerySelectorAll ||
	ElementPrototype.webkitAncestorQuerySelectorAll ||
	function ancestorQuerySelectorAll(selector) {
		for (var cite = this, newNodeList = new NodeList; cite = cite.parentElement;) {
			if (cite.matchesSelector(selector)) ArrayPrototype.push.call(newNodeList, cite);
		}

		return newNodeList;
	};

	ElementPrototype.ancestorQuerySelector = ElementPrototype.ancestorQuerySelector ||
	ElementPrototype.mozAncestorQuerySelector ||
	ElementPrototype.msAncestorQuerySelector ||
	ElementPrototype.oAncestorQuerySelector ||
	ElementPrototype.webkitAncestorQuerySelector ||
	function ancestorQuerySelector(selector) {
		return this.ancestorQuerySelectorAll(selector)[0] || null;
	};
})(this, Element.prototype, Array.prototype);

/* Helper Functions
/* ========================================================================== */

function generateTableRow() {
	var emptyColumn = document.createElement('tr');

	emptyColumn.innerHTML = '<td><a class="cut">-</a><span contenteditable></span></td>' +
		'<td><span contenteditable></span></td>' +
		'<td><span data-prefix>$</span><span contenteditable>0.00</span></td>' +
		'<td><span contenteditable>0</span></td>' +
		'<td><span data-prefix>$</span><span>0.00</span></td>';

	return emptyColumn;
}

function parseFloatHTML(element) {
	return parseFloat(element.innerHTML.replace(/[^\d\.\-]+/g, '')) || 0;
}

function parsePrice(number) {
	return number.toFixed(2).replace(/(\d)(?=(\d\d\d)+([^\d]|$))/g, '$1,');
}

/* Update Number
/* ========================================================================== */

function updateNumber(e) {
	var
	activeElement = document.activeElement,
	value = parseFloat(activeElement.innerHTML),
	wasPrice = activeElement.innerHTML == parsePrice(parseFloatHTML(activeElement));

	if (!isNaN(value) && (e.keyCode == 38 || e.keyCode == 40 || e.wheelDeltaY)) {
		e.preventDefault();

		value += e.keyCode == 38 ? 1 : e.keyCode == 40 ? -1 : Math.round(e.wheelDelta * 0.025);
		value = Math.max(value, 0);

		activeElement.innerHTML = wasPrice ? parsePrice(value) : value;
	}

	updateInvoice();
}

/* Update Invoice
/* ========================================================================== */

function updateInvoice() {
	var total = 0;
	var cells, price, total, a, i;

	// update inventory cells
	// ======================

	for (var a = document.querySelectorAll('table.inventory tbody tr'), i = 0; a[i]; ++i) {
		// get inventory row cells
		cells = a[i].querySelectorAll('span:last-child');

		// set price as cell[2] * cell[3]
		price = parseFloatHTML(cells[2]) * parseFloatHTML(cells[3]);

		// add price to total
		total += price;

		// set row total
		cells[4].innerHTML = price;
	}

	// update balance cells
	// ====================

	// get balance cells
	cells = document.querySelectorAll('table.balance td:last-child span:last-child');

	// set total
	cells[0].innerHTML = total;

	// set balance and meta balance
	cells[2].innerHTML = document.querySelector('table.meta tr:last-child td:last-child span:last-child').innerHTML = parsePrice(total - parseFloatHTML(cells[1]));

	// update prefix formatting
	// ========================

	var prefix = document.querySelector('#prefix').innerHTML;
	for (a = document.querySelectorAll('[data-prefix]'), i = 0; a[i]; ++i) a[i].innerHTML = prefix;

	// update price formatting
	// =======================

	for (a = document.querySelectorAll('span[data-prefix] + span'), i = 0; a[i]; ++i) if (document.activeElement != a[i]) a[i].innerHTML = parsePrice(parseFloatHTML(a[i]));
}

/* On Content Load
/* ========================================================================== */

function onContentLoad() {
	updateInvoice();

	var
	input = document.querySelector('input'),
	image = document.querySelector('img');

	function onClick(e) {
		var element = e.target.querySelector('[contenteditable]'), row;

		element && e.target != document.documentElement && e.target != document.body && element.focus();

		if (e.target.matchesSelector('.add')) {
			document.querySelector('table.inventory tbody').appendChild(generateTableRow());
		}
		else if (e.target.className == 'cut') {
			row = e.target.ancestorQuerySelector('tr');

			row.parentNode.removeChild(row);
		}

		updateInvoice();
	}

	function onEnterCancel(e) {
		e.preventDefault();

		image.classList.add('hover');
	}

	function onLeaveCancel(e) {
		e.preventDefault();

		image.classList.remove('hover');
	}

	function onFileInput(e) {
		image.classList.remove('hover');

		var
		reader = new FileReader(),
		files = e.dataTransfer ? e.dataTransfer.files : e.target.files,
		i = 0;

		reader.onload = onFileLoad;

		while (files[i]) reader.readAsDataURL(files[i++]);
	}

	function onFileLoad(e) {
		var data = e.target.result;

		image.src = data;
	}

	if (window.addEventListener) {
		document.addEventListener('click', onClick);

		document.addEventListener('mousewheel', updateNumber);
		document.addEventListener('keydown', updateNumber);

		document.addEventListener('keydown', updateInvoice);
		document.addEventListener('keyup', updateInvoice);

		input.addEventListener('focus', onEnterCancel);
		input.addEventListener('mouseover', onEnterCancel);
		input.addEventListener('dragover', onEnterCancel);
		input.addEventListener('dragenter', onEnterCancel);

		input.addEventListener('blur', onLeaveCancel);
		input.addEventListener('dragleave', onLeaveCancel);
		input.addEventListener('mouseout', onLeaveCancel);

		input.addEventListener('drop', onFileInput);
		input.addEventListener('change', onFileInput);
	}
}

window.addEventListener && document.addEventListener('DOMContentLoaded', onContentLoad);
	</script>
	</body>
</html>
	<!--
	Credit: http://www.jonathantneal.com/blog/the-html5-invoice/
	Rolled into single file for transportability.
	-->
	<!doctype html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>Invoice: #</title>
	<style>
	/* reset */

	*
	{
	border: 0;
	box-sizing: content-box;
	color: inherit;
	font-family: inherit;
	font-size: inherit;
	font-style: inherit;
	font-weight: inherit;
	line-height: inherit;
	list-style: none;
	margin: 0;
	padding: 0;
	text-decoration: none;
	vertical-align: top;
	}

	/* content editable */

	*[contenteditable] { border-radius: 0.25em; min-width: 1em; outline: 0; }

	*[contenteditable] { cursor: pointer; }

	[contenteditable]:hover, [contenteditable]:focus, td:hover [contenteditable], td:focus [contenteditable], img.hover { background: #DEF; box-shadow: 0 0 1em 0.5em #DEF; }

	span[contenteditable] { display: inline-block; }

	/* heading */

	h1 { font: bold 100% sans-serif; letter-spacing: 0.5em; text-align: center; text-transform: uppercase; }

	/* table */

	table { font-size: 75%; table-layout: fixed; width: 100%; }
	table { border-collapse: separate; border-spacing: 2px; }
	th, td { border-width: 1px; padding: 0.5em; position: relative; text-align: left; }
	th, td { border-radius: 0.25em; border-style: solid; }
	th { background: #EEE; border-color: #BBB; }
	td { border-color: #DDD; }

	/* page */

	html { font: 16px/1 'Open Sans', sans-serif; overflow: auto; padding: 0.5in; }
	html { background: #999; cursor: default; }

	body { box-sizing: border-box; height: 11in; margin: 0 auto; overflow: hidden; padding: 0.5in; width: 8.5in; }
	body { background: #FFF; border-radius: 1px; box-shadow: 0 0 1in -0.25in rgba(0, 0, 0, 0.5); }

	/* header */

	header { margin: 0 0 3em; }
	header:after { clear: both; content: ""; display: table; }

	header h1 { background: #000; border-radius: 0.25em; color: #FFF; margin: 0 0 1em; padding: 0.5em 0; }
	header address { float: left; font-size: 75%; font-style: normal; line-height: 1.25; margin: 0 1em 1em 0; }
	header address p { margin: 0 0 0.25em; }
	header span, header img { display: block; float: right; }
	header span { margin: 0 0 1em 1em; max-height: 25%; max-width: 60%; position: relative; }
	header img { max-height: 100%; max-width: 100%; }
	header input { cursor: pointer; -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=0)"; height: 100%; left: 0; opacity: 0; position: absolute; top: 0; width: 100%; }

	/* article */

	article, article address, table.meta, table.inventory { margin: 0 0 3em; }
	article:after { clear: both; content: ""; display: table; }
	article h1 { clip: rect(0 0 0 0); position: absolute; }

	article address { float: left; font-size: 125%; font-weight: bold; }

	/* table meta & balance */

	table.meta, table.balance { float: right; width: 36%; }
	table.meta:after, table.balance:after { clear: both; content: ""; display: table; }

	/* table meta */

	table.meta th { width: 40%; }
	table.meta td { width: 60%; }

	/* table items */

	table.inventory { clear: both; width: 100%; }
	table.inventory th { font-weight: bold; text-align: center; }

	table.inventory td:nth-child(1) { width: 26%; }
	table.inventory td:nth-child(2) { width: 38%; }
	table.inventory td:nth-child(3) { text-align: right; width: 12%; }
	table.inventory td:nth-child(4) { text-align: right; width: 12%; }
	table.inventory td:nth-child(5) { text-align: right; width: 12%; }

	/* table balance */

	table.balance th, table.balance td { width: 50%; }
	table.balance td { text-align: right; }

	/* aside */

	aside h1 { border: none; border-width: 0 0 1px; margin: 0 0 1em; }
	aside h1 { border-color: #999; border-bottom-style: solid; }

	/* javascript */

	.add, .cut
	{
	border-width: 1px;
	display: block;
	font-size: .8rem;
	padding: 0.25em 0.5em;
	float: left;
	text-align: center;
	width: 0.6em;
	}

	.add, .cut
	{
	background: #9AF;
	box-shadow: 0 1px 2px rgba(0,0,0,0.2);
	background-image: -moz-linear-gradient(#00ADEE 5%, #0078A5 100%);
	background-image: -webkit-linear-gradient(#00ADEE 5%, #0078A5 100%);
	border-radius: 0.5em;
	border-color: #0076A3;
	color: #FFF;
	cursor: pointer;
	font-weight: bold;
	text-shadow: 0 -1px 2px rgba(0,0,0,0.333);
	}

	.add { margin: -2.5em 0 0; }

	.add:hover { background: #00ADEE; }

	.cut { opacity: 0; position: absolute; top: 0; left: -1.5em; }
	.cut { -webkit-transition: opacity 100ms ease-in; }

	tr:hover .cut { opacity: 1; }

	@media print {
	* { -webkit-print-color-adjust: exact; }
	html { background: none; padding: 0; }
	body { box-shadow: none; margin: 0; }
	span:empty { display: none; }
	.add, .cut { display: none; }
	}

	@page { margin: 0; }
	</style>
	<link rel="license" href="http://www.opensource.org/licenses/mit-license/">
	</head>
	<body>
	<header>
	<h1>Invoice</h1>
	<address contenteditable>
	<p>Acme Widgets</p>
	<p>123 Some Street<br>SomeCity, TX 10101</p>
	<p>{###) ###-####</p>
	</address>
	<span><img alt="" src="logo.png"><input type="file" accept="image/*"></span>
	</header>
	<article>
	<h1>Recipient</h1>
	<address contenteditable>
	<p>Some Company<br>c/o Some Guy</p>
	</address>
	<table class="meta">
	<tr>
	<th><span contenteditable>Invoice #</span></th>
	<td><span contenteditable>101001</span></td>
	</tr>
	<tr>
	<th><span contenteditable>Date</span></th>
	<td><span contenteditable><?php echo date('Y-m-d'); ?></span></td>
	</tr>
	<tr>
	<th><span contenteditable>Amount Due</span></th>
	<td><span id="prefix" contenteditable>$</span><span>600.00</span></td>
	</tr>
	</table>
	<table class="inventory">
	<thead>
	<tr>
	<th><span contenteditable>Item</span></th>
	<th><span contenteditable>Description</span></th>
	<th><span contenteditable>Rate</span></th>
	<th><span contenteditable>Quantity</span></th>
	<th><span contenteditable>Price</span></th>
	</tr>
	</thead>
	<tbody>
	<tr>
	<td><a class="cut">-</a><span contenteditable>Front End Consultation</span></td>
	<td><span contenteditable>Experience Review</span></td>
	<td><span data-prefix>$</span><span contenteditable>150.00</span></td>
	<td><span contenteditable>4</span></td>
	<td><span data-prefix>$</span><span>600.00</span></td>
	</tr>
	</tbody>
	</table>
	<a class="add">+</a>
	<table class="balance">
	<tr>
	<th><span contenteditable>Total</span></th>
	<td><span data-prefix>$</span><span>600.00</span></td>
	</tr>
	<tr>
	<th><span contenteditable>Amount Paid</span></th>
	<td><span data-prefix>$</span><span contenteditable>0.00</span></td>
	</tr>
	<tr>
	<th><span contenteditable>Balance Due</span></th>
	<td><span data-prefix>$</span><span>600.00</span></td>
	</tr>
	</table>
	</article>
	<aside>
	<h1><span contenteditable>Additional Notes</span></h1>
	<div contenteditable>
	<p>A finance charge of 1.5% will be made on unpaid balances after 30 days.</p>
	</div>
	</aside>
	<script>
	/* Shivving (IE8 is not supported, but at least it won't look as awful)
	/* ========================================================================== */

	(function (document) {
	var
	head = document.head = document.getElementsByTagName('head')[0] \|\| document.documentElement,
	elements = 'article aside audio bdi canvas data datalist details figcaption figure footer header hgroup mark meter nav output picture progress section summary time video x'.split(' '),
	elementsLength = elements.length,
	elementsIndex = 0,
	element;

	while (elementsIndex < elementsLength) {
	element = document.createElement(elements[++elementsIndex]);
	}

	element.innerHTML = 'x<style>' +
	'article,aside,details,figcaption,figure,footer,header,hgroup,nav,section{display:block}' +
	'audio[controls],canvas,video{display:inline-block}' +
	'[hidden],audio{display:none}' +
	'mark{background:#FF0;color:#000}' +
	'</style>';

	return head.insertBefore(element.lastChild, head.firstChild);
	})(document);

	/* Prototyping
	/* ========================================================================== */

	(function (window, ElementPrototype, ArrayPrototype, polyfill) {
	function NodeList() { [polyfill] }
	NodeList.prototype.length = ArrayPrototype.length;

	ElementPrototype.matchesSelector = ElementPrototype.matchesSelector \|\|
	ElementPrototype.mozMatchesSelector \|\|
	ElementPrototype.msMatchesSelector \|\|
	ElementPrototype.oMatchesSelector \|\|
	ElementPrototype.webkitMatchesSelector \|\|
	function matchesSelector(selector) {
	return ArrayPrototype.indexOf.call(this.parentNode.querySelectorAll(selector), this) > -1;
	};

	ElementPrototype.ancestorQuerySelectorAll = ElementPrototype.ancestorQuerySelectorAll \|\|
	ElementPrototype.mozAncestorQuerySelectorAll \|\|
	ElementPrototype.msAncestorQuerySelectorAll \|\|
	ElementPrototype.oAncestorQuerySelectorAll \|\|
	ElementPrototype.webkitAncestorQuerySelectorAll \|\|
	function ancestorQuerySelectorAll(selector) {
	for (var cite = this, newNodeList = new NodeList; cite = cite.parentElement;) {
	if (cite.matchesSelector(selector)) ArrayPrototype.push.call(newNodeList, cite);
	}

	return newNodeList;
	};

	ElementPrototype.ancestorQuerySelector = ElementPrototype.ancestorQuerySelector \|\|
	ElementPrototype.mozAncestorQuerySelector \|\|
	ElementPrototype.msAncestorQuerySelector \|\|
	ElementPrototype.oAncestorQuerySelector \|\|
	ElementPrototype.webkitAncestorQuerySelector \|\|
	function ancestorQuerySelector(selector) {
	return this.ancestorQuerySelectorAll(selector)[0] \|\| null;
	};
	})(this, Element.prototype, Array.prototype);

	/* Helper Functions
	/* ========================================================================== */

	function generateTableRow() {
	var emptyColumn = document.createElement('tr');

	emptyColumn.innerHTML = '<td><a class="cut">-</a><span contenteditable></span></td>' +
	'<td><span contenteditable></span></td>' +
	'<td><span data-prefix>$</span><span contenteditable>0.00</span></td>' +
	'<td><span contenteditable>0</span></td>' +
	'<td><span data-prefix>$</span><span>0.00</span></td>';

	return emptyColumn;
	}

	function parseFloatHTML(element) {
	return parseFloat(element.innerHTML.replace(/[^\d\.\-]+/g, '')) \|\| 0;
	}

	function parsePrice(number) {
	return number.toFixed(2).replace(/(\d)(?=(\d\d\d)+([^\d]\|$))/g, '$1,');
	}

	/* Update Number
	/* ========================================================================== */

	function updateNumber(e) {
	var
	activeElement = document.activeElement,
	value = parseFloat(activeElement.innerHTML),
	wasPrice = activeElement.innerHTML == parsePrice(parseFloatHTML(activeElement));

	if (!isNaN(value) && (e.keyCode == 38 \|\| e.keyCode == 40 \|\| e.wheelDeltaY)) {
	e.preventDefault();

	value += e.keyCode == 38 ? 1 : e.keyCode == 40 ? -1 : Math.round(e.wheelDelta * 0.025);
	value = Math.max(value, 0);

	activeElement.innerHTML = wasPrice ? parsePrice(value) : value;
	}

	updateInvoice();
	}

	/* Update Invoice
	/* ========================================================================== */

	function updateInvoice() {
	var total = 0;
	var cells, price, total, a, i;

	// update inventory cells
	// ======================

	for (var a = document.querySelectorAll('table.inventory tbody tr'), i = 0; a[i]; ++i) {
	// get inventory row cells
	cells = a[i].querySelectorAll('span:last-child');

	// set price as cell[2] * cell[3]
	price = parseFloatHTML(cells[2]) * parseFloatHTML(cells[3]);

	// add price to total
	total += price;

	// set row total
	cells[4].innerHTML = price;
	}

	// update balance cells
	// ====================

	// get balance cells
	cells = document.querySelectorAll('table.balance td:last-child span:last-child');

	// set total
	cells[0].innerHTML = total;

	// set balance and meta balance
	cells[2].innerHTML = document.querySelector('table.meta tr:last-child td:last-child span:last-child').innerHTML = parsePrice(total - parseFloatHTML(cells[1]));

	// update prefix formatting
	// ========================

	var prefix = document.querySelector('#prefix').innerHTML;
	for (a = document.querySelectorAll('[data-prefix]'), i = 0; a[i]; ++i) a[i].innerHTML = prefix;

	// update price formatting
	// =======================

	for (a = document.querySelectorAll('span[data-prefix] + span'), i = 0; a[i]; ++i) if (document.activeElement != a[i]) a[i].innerHTML = parsePrice(parseFloatHTML(a[i]));
	}

	/* On Content Load
	/* ========================================================================== */

	function onContentLoad() {
	updateInvoice();

	var
	input = document.querySelector('input'),
	image = document.querySelector('img');

	function onClick(e) {
	var element = e.target.querySelector('[contenteditable]'), row;

	element && e.target != document.documentElement && e.target != document.body && element.focus();

	if (e.target.matchesSelector('.add')) {
	document.querySelector('table.inventory tbody').appendChild(generateTableRow());
	}
	else if (e.target.className == 'cut') {
	row = e.target.ancestorQuerySelector('tr');

	row.parentNode.removeChild(row);
	}

	updateInvoice();
	}

	function onEnterCancel(e) {
	e.preventDefault();

	image.classList.add('hover');
	}

	function onLeaveCancel(e) {
	e.preventDefault();

	image.classList.remove('hover');
	}

	function onFileInput(e) {
	image.classList.remove('hover');

	var
	reader = new FileReader(),
	files = e.dataTransfer ? e.dataTransfer.files : e.target.files,
	i = 0;

	reader.onload = onFileLoad;

	while (files[i]) reader.readAsDataURL(files[i++]);
	}

	function onFileLoad(e) {
	var data = e.target.result;

	image.src = data;
	}

	if (window.addEventListener) {
	document.addEventListener('click', onClick);

	document.addEventListener('mousewheel', updateNumber);
	document.addEventListener('keydown', updateNumber);

	document.addEventListener('keydown', updateInvoice);
	document.addEventListener('keyup', updateInvoice);

	input.addEventListener('focus', onEnterCancel);
	input.addEventListener('mouseover', onEnterCancel);
	input.addEventListener('dragover', onEnterCancel);
	input.addEventListener('dragenter', onEnterCancel);

	input.addEventListener('blur', onLeaveCancel);
	input.addEventListener('dragleave', onLeaveCancel);
	input.addEventListener('mouseout', onLeaveCancel);

	input.addEventListener('drop', onFileInput);
	input.addEventListener('change', onFileInput);
	}
	}

	window.addEventListener && document.addEventListener('DOMContentLoaded', onContentLoad);
	</script>
	</body>
	</html>