<?xml version="1.0" encoding="utf-8"?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>PNG image drag and drop: allowed effects 'copy','move','link'</title>
<style type="text/css">
div
	{display:inline-block;
	vertical-align:top;
	background-color:olive;
	color:white;
	padding:20px;
	width:100px;
	height:100px;}
div:nth-child(2)
	{background-color:green;}
div:nth-child(3)
	{background-color:teal;}
</style>
<script type="application/ecmascript">
var effects = ['copy','move','link'], i = 0;
function dropSelection(event)
	{event.target.appendChild(document.createTextNode((event.dataTransfer.dropEffect == effects[i] &amp;&amp; event.dataTransfer.effectAllowed == effects[i])?' PASS ':' FAIL '));
	i = (i + 1)%3;}
function start(event)
	{event.dataTransfer.effectAllowed = effects[i]}
</script>
</head>
<body onload="selectText()">
<p><img ondragstart="start(event)" src="data:image/png;base64,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" alt="PNG circle"/></p>
<div ondragenter="event.preventDefault()" ondragover="return false" ondrop="dropSelection(event)"/>
<div ondragenter="event.preventDefault()" ondragover="return false" ondrop="dropSelection(event)"/>
<div ondragenter="event.preventDefault()" ondragover="return false" ondrop="dropSelection(event)"/>
<p>You should be able to drag circle and drop it onto any of the green boxes.</p>
</body>
</html>