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<?xml version="1.0" encoding="utf-8"?>
<head>
<title>Cross frame drag and drop: helper file</title>
<style type="text/css">
div
{width:0;
height:0;
border:solid 50px silver;
border-radius:50px;
margin-left:auto;}
</style>
<script type="application/ecmascript">
var step = 1;
function start(event)
{if(step++ == 1)
{setColor('green silver silver silver');}
else
{step = 0;
setColor('maroon');
say('Dragstart should be first event to fire.')}
}
function leavePage(event)
{if(step++ > 1)
{setColor('green green silver silver')}
else
{step = 0;
setColor('maroon');
say('Dragleave should fire after dragstart.')}
}
function endDrag(event)
{if(step++ > 2)
{setColor('green')}
else
{step = 0;
setColor('maroon');
say('Dragend should fire after dragstart and dragleave.')}
}
function say(it)
{document.querySelector('pre').appendChild(document.createTextNode(it + '\n'))}
function setColor(c)
{document.querySelector('div').setAttribute('style','border-color:' + c)}
</script>
</head>
<body ondragleave="leavePage(event)">
<p><a href="data:text/plain,1" ondragstart="start(event)" ondragend="endDrag(event)">Drag me</a></p>
<p>Drag link to the frame below and drop it there. Both circles should turn green once link is dropped into lower frame.</p>
<div/>
<pre/>
</body>
</html>