How to insert specified code into the fckeditor editor_javascript skills

function insertHTMLToEditor(obj)
{
      var oEditor = FCKeditorAPI.GetInstance("content");
      if(oEditor.EditMode == FCK_EDITMODE_WYSIWYG)
      {
             oEditor.InsertHtml(obj)
      }
      else
     {
              return false;
     }
}