Role distribution Ver.10
 
<script>
 
var AMTBonus = 0.0;
 
function receiveMessage(event) {
 // if we detect the survey is over, hide the iframe and end experiment.
 if (event.data == "closeQSIWindow") {
   $("#qualFrame").hide();  
   experimentComplete();
 }
 // if researcher calls popupConsent in survey and user has not already consented before, pop up the experiment's consent form
 if (event.data == "popupConsent") {
   if (REQUEST_CONSENT) {
     requestConsent();
   }
 }
 // if researcher calls "payAMT" in survey and it's a turker, pay the base plus whatever bonus AMTBonus is set to.
 if (event.data == "payAMT") {
   if (IS_AMT){
     payAMT(true, AMTBonus);
   }
 }
}
 
// Function to show the subject ID to the participant
function showSubjectId(subjectId) {
 document.getElementById('member_id_display').innerText = "Your member ID is " + subjectId;
}
 
// Start the study
function initialize() {
 // place the title on the survey page
 $("#survey_title").html(variables["title"]);
 
 // create a listener for qualtrics
 window.addEventListener("message", receiveMessage, false);
 
 // Create an iframe called "qualFrame" that goes to the qualtrics URL and pass the testId and subjectID variables in the URL
 $("#qualFrame").attr("src", variables["survey_link"] + "&testId=" + seed + "&subjectId=" + myid);
 $("#qualFrame").height(variables["survey_height"]);
 $("#qualFrame").show();
 
 // Show the subject ID to the participant
 showSubjectId(myid);
}
 
</script>
 
<!-- format the html page with the title placeholder <h1> and the iframe placeholder <iframe> -->
<h1 id="survey_title"></h1>
<p id="member_id_display" style="text-align: center; font-weight: bold; font-size: 24px;"></p >
<iframe id="qualFrame"
 name="qualtrics" scrolling="auto" frameborder="no" align="center"
 width="100%"
 style="display: none;"></iframe>