turk/samples/external_hit/externalpage.htm from ucberkeley/moocchat

turk/samples/external_hit/externalpage.htm
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<!-- This file needs to be hosted on an external server.  -->
<html>
<script language="Javascript">
//
// This method Gets URL Parameters (GUP)
//
function gup( name )
{
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var tmpURL = window.location.href;
  var results = regex.exec( tmpURL );
  if( results == null )
    return "";
  else
    return results[1];
}

//
// This method decodes the query parameters that were URL-encoded
//
function decode(strToDecode)
{
  var encoded = strToDecode;
  return unescape(encoded.replace(/\+/g,  " "));
}

</script>
<body>
<form id="mturk_form" method="POST" action="http://www.mturk.com/mturk/externalSubmit">
<input type="hidden" id="assignmentId" name="assignmentId" value="">
<table border="0" height="100%" width="100%">
<tr><td>
<h1>What type of webpage is shown below?</h1>
<p>
<input type="radio" name="category" value="news">&nbsp;News Site<br>
<input type="radio" name="category" value="search">&nbsp;Search Engine<br>
<input type="radio" name="category" value="retail">&nbsp;Online Retailer<br>
<input type="radio" name="category" value="other" selected>&nbsp;Other<br>
<p>
<input id="submitButton" type="submit" name="Submit" value="Submit">
<p>
</td></tr>
<tr><td height="100%">
<iframe id="pageFrame" width="100%" height="100%"></iframe>
</td></tr>
</table>
</form>
<script language="Javascript">
    document.getElementById('pageFrame').src = decode(gup('url'));
    document.getElementById('assignmentId').value = gup('assignmentId');


    //
    // Check if the worker is PREVIEWING the HIT or if they've ACCEPTED the HIT
    //
    if (gup('assignmentId') == "ASSIGNMENT_ID_NOT_AVAILABLE")
    {
  // If we're previewing, disable the button and give it a helpful message
  document.getElementById('submitButton').disabled = true;
  document.getElementById('submitButton').value = "You must ACCEPT the HIT before you can submit the results.";
    } else {
        var form = document.getElementById('mturk_form');
        if (document.referrer && ( document.referrer.indexOf('workersandbox') != -1) ) {
            form.action = "http://workersandbox.mturk.com/mturk/externalSubmit";
        }
    }

</script>
</body>
</html>