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<?xml version="1.0" encoding="utf-8"?>
<head>
<title>Cross page drag and drop: helper file</title>
<style type="text/css">
div[ondragenter]
{margin:200px 0 0 200px;
width:200px;
height:100px;
color:white;
background-color:navy;}
div[ondragenter]:before
{display:block;
content:"";
border-style:solid;
position:relative;
top:-50px;
left:-200px;
border-width:100px;
border-color:transparent navy transparent transparent;}
</style>
</head>
<body>
<p>Drag canvas to the blue arrow but don't drop it yet. You should be returned back to start page.</p>
<div ondragenter="event.preventDefault()" ondragover="history.go(-1)"/>
</body>
</html>