<!DOCTYPE html>
<title>drag &amp; drop - file drop prompt for file:</title>
<style>
  body > div {
    height: 200px;
    width: 200px;
    background-color: orange;
  }
</style>

<script>
window.onload = function() {
	if( location.protocol != 'file:' ) {
		document.getElementsByTagName('p')[0].innerHTML = 'Save this page to your local filesystem, and load it from there.';
		return;
	}
	var orange = document.getElementsByTagName('div')[0];
	orange.ondragover = orange.ondragenter = orange.ondrop = function(e) {
   	e.preventDefault();
  };
};
</script>

<div></div>

<p>Drag a file from your desktop onto the orange square. A prompt should appear, either showing the server name as localhost, or otherwise identifying this file as the target of the upload.</p>
<noscript><p>Enable JavaScript and reload</p></noscript>