Error: Object doesn't support this property or method. in IE6

Error: Object doesn't support this property or method. in IE6

Can you help me with this. Browser IE 6 and JQuery 1.4.4
Error is at this line$( "#form0" ).validate({ rules: { issueCheckBox: { selectNone: true }} }); in document.Ready function.
 
If code is not properly formatted please see the attachement. Script.txt
 
<

script src ="../../Scripts/jquery-1.4.4.min.js" type ="text/javascript"></ script >

<

 script src ="../../Scripts/jquery.validate.min.js" type ="text/javascript"></ script >

<

 script src ="../../Scripts/jquery.validate.unobtrusive.min.js" type ="text/javascript"></ script >

< script >

$.validator.addMethod(

 "selectNone" , function (value, element) {

                        var n = $( "input[name='issueCheckBox']:checked" ).serializeArray();

                       if (n.length < 1)

  1.                        {

                            $(

    "#divIssueCheckBoxError").show();

                            $(

    "#divIssueCheckBoxError").css("color", "red");

                            $(

    "#divIssueCheckBoxError").text("Issue(s) Required.");

                             return false;

                           }

                           else
  2.                        {

                            $(

    "#divIssueCheckBoxError").hide();

                            return true;

                           }

                      },

                      function () { }

                      );

          $(document).ready(
    function ()
  3.               {

                                  $("#form0").validate({ rules: { issueCheckBox: { selectNone: true}} });

                            }
  4.                   );

    </

    script>