我正在使用plupload将图像文件上载到服务器。javascript代码直接取自plupload网站的示例页面：

    <div id="filelist">Your browser doesn't have Flash, Silverlight or HTML5 support.</div>
                <button id="pickfiles" href="javascript:;" />Dosya Seç<br /><br />

                 <button  id="uploadfiles" href="javascript:;" />YÜKLE<br /><br /> 
                    <pre id="console"></pre>
              <script type="text/javascript">
// Custom example logic

var uploader = new plupload.Uploader({
    runtimes : 'html5,flash,silverlight,html4',
    browse_button : 'pickfiles', // you can pass in id...
    container: document.getElementById('container'), // ... or DOM Element itself
    url : 'yonetim.asp?id=13&sid=1&emlak=<%=emlakid%>',
     resize : {width : 400, height : 300, quality : 99},
    filters : {
        max_file_size : '15mb',
        mime_types: [
            {title : "Image files", extensions : "jpg,gif,png"}
        ]
    },

    init: {
        PostInit: function() {
            document.getElementById('filelist').innerHTML = '';

            document.getElementById('uploadfiles').onclick = function() {
                uploader.start();
                return false;
            };
        },

        FilesAdded: function(up, files) {
            plupload.each(files, function(file) {
                document.getElementById('filelist').innerHTML += '<br><br><div id="' + file.id + '">' + file.name + ' (' + plupload.formatSize(file.size) + ') <b></b></div>';
            });
        },

        UploadProgress: function(up, file) {
            document.getElementById(file.id).getElementsByTagName('b')[0].innerHTML = '<span>' + file.percent + "%</span>";
        },

        UploadComplete: function (up, files) {
            // Called when all files are either uploaded or failed
            console.log('[UploadComplete]');
            window.location = 'yonetim.asp?id=13&sid=1&emlak=<%=emlakid%>';
        },
        Error: function(up, err) {
            document.getElementById('console').innerHTML += "\nError #" + err.code + ": " + err.message;
        }
    }
});

uploader.init();

</script>

剧本似乎是工作；它在我单击开始上载按钮时加载图像文件，并指示百分比。但最后它并没有重定向到上传页面即“yonetim.asp”，实际上它停留在同一页面上，并给出200个http错误。任何想法都会有帮助。