[jQuery] AJAX/JSON/PHP function works in Safari/FF but not in IE

[oktorp]

This code works flawless in Safari and FF but not in any IE. Can
anyone see the problem?

$(document).ready(function() {
        $("#jquery_spinner_2").hide(function() {
                first = true;
                teaser(function() {
                        $("#jquery_spinner_2").hide(function() {
                                $("#jquery_spinner_1").fadeIn('slow')
                        });
                });

                teaser();
        });

function teaser() {
  var spinnerContainer_1 = $('#jquery_spinner_1');
  var spinnerContainer_2 = $('#jquery_spinner_2');

        $.ajax({
          url: '/_library/ajax.php',
          data: 'ajax-action=getStartImages',
          dataType: 'json',
          type: 'post',
          success: function (j) {
          if(!first) {
          spinnerContainer_2.html(j);
          first = true;
          } else {
          spinnerContainer_1.html(j);
          first = false;
          }
          }
        });
 }

$.timer(5000,(function (timer) {
        if(first) {

                $("#jquery_spinner_1").fadeOut('slow',function() {
                        $("#jquery_spinner_2").fadeIn('slow');
                        $("#jquery_spinner_1").hide();
                        teaser();
                });
        } else {
                $("#jquery_spinner_2").fadeOut('slow',function() {
                        $("#jquery_spinner_1").fadeIn('slow');
                        $("#jquery_spinner_2").hide();
                        teaser();
                });
        }

}));
});