tinymce控件整合Coolite 控件

为什么tinymce控件整合到Coolite 控件里面，tinymce控件不能编辑。如：
<ext:TabPanel ID="TabPanel1" runat="server" ActiveTabIndex="0" Width="800">
        <Tabs>
            <ext:Tab ID="Tab1" 
                runat="server" 
                Title="Short Text" 
                AutoHeight="true"
                BodyStyle="padding: 6px;">
                <Body>
                          <div>
                            <tinymce:TextArea ID="elm1" theme="advanced"    
plugins="spellchecker,safari,pagebreak,style,layer,table,save,advhr,advimage,advlink,emotions,iespell,inlinepopups,insertdatetime,preview,media,searchreplace,print,contextmenu,paste,directionality,fullscreen,noneditable,visualchars,nonbreaking,xhtmlxtras,template,asciimath,asciisvg"
                                theme_advanced_buttons1="fontselect,fontsizeselect,formatselect,bold,italic,underline,strikethrough,separator,sub,sup,separator,cut,copy,paste,pastetext,pasteword,|,search,replace,|,undo,redo,|,fullscreen"
                                theme_advanced_buttons2="justifyleft,justifycenter,justifyright,justifyfull,separator,numlist,bullist,outdent,indent,separator,forecolor,backcolor,separator,hr,removeformat,link,unlink,image,table,code,|,asciimath,asciimathcharmap,asciisvg"
                                theme_advanced_buttons3="" theme_advanced_toolbar_location="top" theme_advanced_toolbar_align="left"
                                auto_cleanup_word="true" theme_advanced_path_location="bottom" AScgiloc="/editordemo/php/svgimg.php"
                                ASdloc="jscripts/tiny_mce/plugins/asciisvg/js/d.svg" language="zh" content_css="css/content.css"
                                scrolling="auto" Width="100%" runat="server" />
                    </div>
                </Body>
            </ext:Tab>
        </Tabs>
    </ext:TabPanel>不知道哪位高手指教一下。