javascript取得fckeditor编辑器FCKeditor1值

var oEditor = FCKeditorAPI.GetInstance("FCKeditor1");
var oDOM = oEditor.EditorDocument;
var value;
if(document.all)
{
  value= oDOM.body.innerText;
}
else
{
  var r = oDOM.createRange();
  r.selectNodeContents(oDOM.body);
  value= r.toString();
}

$body = $_POST['你FCKeditor名'];