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:2014学年高二语文同步练习:(新人教版必修5)(共13份) 下一篇:2014高考地理轻取高分秘籍 '; }