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<?xml version="1.0" encoding="utf-8"?>
<head>
<title>Link drag and drop: allowed effects 'link','linkMove','uninitialized'</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 = ['link','linkMove','copyMove'], i = 0;
function dropSelection(event)
{event.target.appendChild(document.createTextNode((event.dataTransfer.dropEffect == effects[i].substring(0,4) && 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><a href="data:text/plain,1" ondragstart="start(event)">Drag me</a></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 link and drop it onto any of the green boxes.</p>
</body>
</html>