JSON的jQuery Ajax xBrowser

Question

I have some code that uses jQuery to make an AJAX call to a non-local server for 'supposed' JSON data. However, I have no way of knowing what the data yet contains, as I am receiving a bad return from the $.parseJSON(varjson) method.

The HTTP request in my web console indicates the response text is 307 characters long, so is there a way for me to simply check what's in the response?

    <script type="text/javascript">
$(document).ready(function (){
    $("#button").click(function(){                
        var url = "http://developer.pw-hq.com/api/session";

        var success = function(data){
        alert('in function');
            var html = [];
            /* parse JSON */
            //data = $.parseJSON(data);
            /* loop through array */
            alert(data);
            $.each(data, function(index, d){            
                html.push(
                          "Device Secret : ", d.deviceSecret, ", ",
                          "Name : ", d.name, ", ",
                          "ID : ", d.id, ", ",
                          "Role : ", d.role, ", ",
                          "Trust Level : ", d.trustLevel, ", ",
                          "E-Mail : ", d.email, ", ",
                          "Timezone : ", d.timezone, ", ")
            });
            alert(html);
            console.log(data);
            $("#return").html(html.join('')).css("background-color", "orange");
        };

        $.ajax({
          type: 'POST',    
          url: url,
          data:{email:"[e-mail]", password:"assessmyskillz", deviceId:""},
          dataType: "application/json",
          crossDomain: true,          
          cache:false, 
          success: success,
          error: function (xhr, ajaxOptions, thrownError) {
          alert(xhr.status);
          alert(thrownError);
          }
        });
    });
});

Feel free to attempt a solution. The credentials are legitimate. For potential work :-p