JS集成fckeditor及判断内容是否为空的方法

<script type="text/javascript"><!--// Automatically calculates the editor base path based on the _samples directory.// This is usefull only for these samples. A real application should use something like this:// oFCKeditor.BasePath = '/fckeditor/' ; // '/fckeditor/' is the default value.var sBasePath ='/fckeditor/';var oFCKeditor = new FCKeditor( 'news_content' ) ;oFCKeditor.BasePath = sBasePath ;oFCKeditor.Height = 400 ;oFCKeditor.Width = 600 ;oFCKeditor.Value = '' ;oFCKeditor.Create() ;//-->//取fck内容的长度function GetMessageLength(str){ var oEditor = FCKeditorAPI.GetInstance(str) ; var oDOM = oEditor.EditorDocument ; var iLength ; if ( document.all ) // If Internet Explorer. { iLength = oDOM.body.innerText.length ; } else // If Gecko. { var r = oDOM.createRange() ; r.selectNodeContents( oDOM.body ) ; iLength = r.toString().length ; }// oEditor.InsertHtml('')return iLength} function CheckPost(){ if(GetMessageLength("news_content")=='0') { alert('请输入内容'); return false; }}//取fck内容function GetMessageContent(str){ var oEditor = FCKeditorAPI.GetInstance(str) ; return oEditor.GetXHTML();}</script>

$Config['UserFilesPath'] = '/upload/' ;$Config['AllowedExtensions']['Image'] = array('bmp','gif','jpeg','jpg','png') ;$Config['DeniedExtensions']['Image'] = array() ;$Config['FileTypesPath']['Image'] = $Config['UserFilesPath'] . 'image/' ;$Config['FileTypesAbsolutePath']['Image']= ($Config['UserFilesAbsolutePath'] == '') ? '' : $Config['UserFilesAbsolutePath'].'image/' ;$Config['QuickUploadPath']['Image'] = $Config['UserFilesPath'] ;$Config['QuickUploadAbsolutePath']['Image']= $Config['UserFilesAbsolutePath'] ;