title: window.open open in new popup window not in new tab
body: <p>This is my ajax request </p>
  
  <pre><code> $.ajax({
          type: "POST",
          url: "Performance.aspx/GenerateMatrix",
          data: '{OrgId: ' + $('#hidOrgId').val() + ',SurveyFormId: ' + $('#divMatrixInfo .FeedbackForm').val() + ',GoalId: ' + $('#divMatrixInfo .FeedbackGoal').val() + ',StartDate: ' + "'" + StartDateTime + "'" + ',EndDate: ' + "'" + EndDateTime + "'" + ',EmployeeId: ' + "'" + $('#divMatrixInfo .FeedbackEmployee').val() + "'" + ',QuestionId: ' + "'" + $('#divMatrixInfo .FeedbackQuestion').val() + "'" + '}',
          contentType: "application/json; charset=utf-8",
          dataType: "json",
          success: function (response) {
                          CloseModelOverLay('divMatrixInfo');
                          window.open('GenerateMatrix.aspx', '_blank');
                          $('#ddlPDPView').val('Goals');
                          $('#ddlPDPView').change();
          },
          failure: function (response) {
                          alert(response.d);
          }
        });
  </code></pre>
  
  <p>I want to open GenerateMatrix.aspx to open in new tab by this</p>
  
  <pre><code>window.open('GenerateMatrix.aspx', '_blank');
  </code></pre>
  
  <p>but instead it opens in new pop up window. </p>