如何使TinyMCE在UpdatePanel中工作？

function initializeTinyMCE() {
    tinyMCE.init({
        mode: "textareas",
        theme: "advanced",
        theme_advanced_toolbar_location: "top",
        theme_advanced_toolbar_align: "left",
        theme_advanced_buttons1: "bold,italic,underline,strikethrough,|,justifyleft,justifycenter,justifyright,justifyfull,|,bullist,numlist,|,outdent,indent,|,undo,redo,|,link,unlink,anchor,image,cleanup,code,|,insertdate,inserttime,preview,|,forecolor,backcolor",
        theme_advanced_buttons2: "",
        theme_advanced_buttons3: "",
        theme_advanced_path: false,
        plugins: "preview,inlinepopups",
        width: "100%"
    });
}

Sys.WebForms.PageRequestManager.getInstance().add_endRequest(function () {
    initializeTinyMCE();
});