jquery disabled

<table width="1000px" border="0" align="center" cellpadding="0" cellspacing="0" id="__01">
        <tr>
            <td style="text-align: center; vertical-align: middle;">
                <div class="easyui-panel" style="width: 640px; height: 260px; padding: 10px;">
                    <p><b>ShareFolder Path: </b><span id="shareFolderPath"></span></p>
                    <p><b>Files to process </b>(Person xml file count <span id="personCount" style="color: red;">0</span>, Entity xml file count <span id="entityCount" style="color: red;">0</span>)</p>
                    <p><b>Result: </b><span id="parsingResult"></span></p>
                </div>
            </td>
        </tr>
        <tr>
            <td height="50" align="center" valign="middle">
                <input type="button" id="btnStartParsing" name="btnStartParsing" value="Start Parsing" />
                <input type="button" id="btnTest" name="btnTest" value="Test" />
            </td>
        </tr>
    </table>

<script type="text/javascript">

        var url = window.location.href.toLocaleLowerCase().replace("index.aspx", "Handler.ashx");

        $(document).ready(function () {


            getShareFolderPath();

            loadShareFolderXml();

            $("#btnStartParsing").click(function () {
                return btnParsingOnClick();
            });

            $("#btnTest").click(function () {
                return btnTestOnClick();
            });
        });

        function getShareFolderPath() {
            $.ajax({
                type: "GET",
                url: url + "?action=getsharefolderpath&r=" + Math.random(),
                dataType: "json",
                data: null,
                async: true,
                success: function (json) {
                    if (json.result) {
                        $("#shareFolderPath").html("<a href=\"" + json.data + "\" target=\"_blank\">" + json.data + "</a>");
                    }
                    else {
                        alert(json.msg);
                    }
                },
                error: function (XMLHttpRequest, textStatus, errorThrown) { alert(textStatus); }
            })
        }

        function loadShareFolderXml() {
            $.ajax({
                type: "GET",
                url: url + "?action=initfolder&r=" + Math.random(),
                dataType: "json",
                data: null,
                success: function (json) {
                    if (json.result) {
                        if (json.data.personCount != null) {
                            $("#personCount").text(json.data.personCount);
                        }
                        if (json.data.personCount != null) {
                            $("#personCount").text(json.data.entityCount);
                        }
                        if (parseInt(json.data.personCount) > 0 || parseInt(json.data.entityCount) > 0) {
                            $("#btnStartParsing").prop("disabled", false);
                            $("#btnStartParsing").removeAttr("disabled");
                        }
                        else {
                            $("#btnStartParsing").prop("disabled", true);
                        }
                    }
                    else {
                        $("#btnStartParsing").prop("disabled", true);
                        alert(json.msg);
                    }
                },
                error: function (XMLHttpRequest, textStatus, errorThrown) {

                    $("#btnStartParsing").prop("disabled", true);
                    alert(textStatus);
                }
            })
        }

        function btnParsingOnClick() {
            $.ajax({
                type: "GET",
                url: url + "?action=startparsing&r=" + Math.random(),
                dataType: "json",
                data: null,
                async: true,
                beforeSend: function () {
                    //$("#btnStartParsing").prop("value", "Processing, please wait...,Do not click again or close page");
                    $("#btnStartParsing").val("Processing, please wait...,Do not click again or close page");
                    $("#btnStartParsing").prop("disabled", true);
                },
                success: function (json) {

                    $("#parsingResult").text(json.msg);

                    loadShareFolderXml();
                },
                complete: function () {
                    $("#btnStartParsing").val("Start Parsing");
                    loadShareFolderXml();
                },
                error: function (XMLHttpRequest, textStatus, errorThrown) { alert(textStatus); }
            });

            return false;
        }
        function btnTestOnClick() {
            var btn = $("#btnTest");
            //btn.prop("value", "Processing, please wait...,Do not click again or close page");
            btn.val("Processing, please wait...,Do not click again or close page");
            btn.prop("disabled", true);

            setTimeout(function () {

                btn.val("Start Parsing");
                btn.prop("disabled", false);

            }, 5000);


            return false;
        }

    </script>