Shows/tests D3.JS error reporting behaviour for same-domain and cross-domain JSON and XML requests.
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<h1>Testing D3 data loading:</h1>
<div id="report"></div>
</body>
</html>
/*
Load various data files and show their contents in the HTML page...
Also test error paths and report those as well...
*/