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:2019-2020学年新素养导学英语必修一外研新标准版课件+文档 下一篇:2019-2020学年新素养导学化学必修一苏教新标准版课件+文档 ';
}