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:历年高考状元传授英语学习独门秘笈 下一篇:英语复习找出薄弱环节强化训练 '; }