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<?xml version="1.0" encoding="utf-8"?>
<head>
<title>Setting drag image during drag and drop of PNG image</title>
<style type="text/css">
span
{color:green;
background-color:yellow;}
img
{height:100px;
width:100px;}
</style>
<script type="application/ecmascript">
function start(event)
{event.dataTransfer.effectAllowed = 'copy';
event.dataTransfer.setDragImage(document.querySelector('span'), 1, 1);}
</script>
</head>
<body>
<p ondragstart="start(event)">
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAYAAABytg0kAAAAEElEQVR42mNgaGD4D8YwBgAw9AX9Y9zBwwAAAABJRU5ErkJggg==" alt="PNG green pixel"/>
</p>
<p>Try to drag green box above. You should see word <span>PASS</span> in feedback overlay.</p>
</body>
</html>