function chkdiv(divid){ var chkid=document.getElementById(divid); if(chkid != null){return true; } else {return false; } } if (chkdiv('fy')){ document.getElementById('fy').innerHTML='上一篇:精编语文课件(苏教08版必修1) 下一篇:广西柳州铁一中09-10学年高二上学期段考 '; }