var subsecondClass = new Array();
var subthirdClass = new Array();
subsecondClass[0] = new Array('7','1','速卖通运营')
subsecondClass[1] = new Array('8','1','WISH运营')
subsecondClass[2] = new Array('9','1','Ebay运营')
subsecondClass[3] = new Array('10','1','亚马逊运营')
subsecondClass[4] = new Array('11','1','拼多多运营')
subsecondClass[5] = new Array('12','1','京东运营')
subsecondClass[6] = new Array('13','1','1688运营')
subsecondClass[7] = new Array('14','1','天猫运营')
subsecondClass[8] = new Array('15','1','淘宝运营')
subsecondClass[9] = new Array('16','2','CINEMA 4D')
subsecondClass[10] = new Array('17','2','3DS MAX')
subsecondClass[11] = new Array('18','2','Auto CAD')
subsecondClass[12] = new Array('19','2','After Effect')
subsecondClass[13] = new Array('20','2','Premiere')
subsecondClass[14] = new Array('21','2','CorelDraw')
subsecondClass[15] = new Array('22','2','Illustrator')
subsecondClass[16] = new Array('23','2','Photoshop')
subsecondClass[17] = new Array('24','2','Dream Waver')
subsecondClass[18] = new Array('25','2','平面广告设计')
subsecondClass[19] = new Array('26','2','电商设计')
subsecondClass[20] = new Array('27','2','室内家装设计')
subsecondClass[21] = new Array('28','2','视频后期制作')
subsecondClass[22] = new Array('29','2','UI设计')
subsecondClass[23] = new Array('30','2','VI设计')
subsecondClass[24] = new Array('31','2','网页设计')
subsecondClass[25] = new Array('32','3','微信营销')
subsecondClass[26] = new Array('33','3','自媒体营销')
subsecondClass[27] = new Array('34','3','今日头条运营玩法')
subsecondClass[28] = new Array('35','3','百度竞价运营玩法')
subsecondClass[29] = new Array('36','4','web前端')
subsecondClass[30] = new Array('37','4','后端程序')
function showSecondClass(selectValue)
{
document.getElementById('SmallClassID').length = 0;
document.getElementById('SmallClassID').options[0] = new Option('请选择','');
document.getElementById('ClassID').length = 0;
document.getElementById('ClassID').options[0] = new Option('请选择','');
for (var i=0; i<subsecondClass.length; i++)
{
 if (subsecondClass[i][1] == selectValue)
{
 document.getElementById('SmallClassID').options[document.getElementById('SmallClassID').length] = new Option(subsecondClass[i][2], subsecondClass[i][0]);
 }
 }
if (document.getElementById('SmallClassID').length>1) { document.getElementById('SmallClassID').style.display=''; }else{ document.getElementById('SmallClassID').style.display='none'; } }
function showThirdClass(selectValue)
{
document.getElementById('ClassID').length = 0;
document.getElementById('ClassID').options[0] = new Option('请选择','');
for (var i=0; i<subthirdClass.length; i++)
{
 if (subthirdClass[i][1] == selectValue)
  {
    document.getElementById('ClassID').options[document.getElementById('ClassID').length] = new Option(subthirdClass[i][2], subthirdClass[i][0]);
  }
 }
 if (document.getElementById('ClassID').length>1) { document.getElementById('ClassID').style.display=''; }else{ document.getElementById('ClassID').style.display='none'; }  }
document.write ("<select name='BigClassID' id='BigClassID' onChange='showSecondClass(this.value);'>");
document.write ("<option value='' selected>选择分类</option>");document.write ("<option value='1'>电商学院</option>");
document.write ("<option value='2'>设计学院</option>");
document.write ("<option value='3'>营销学院</option>");
document.write ("<option value='4'>软件学院</option>");
document.write ("<option value='5'>教师招考</option>");
document.write ("<option value='6'>学历教育</option>");
document.write ("</select>");
document.write (" <select name='SmallClassID' style='display:none;width:100px' id='SmallClassID' onChange='showThirdClass(this.value);'>");document.write ("<option value='' selected>请选择</option>");document.write ("</select>");
document.write (" <select name='ClassID' style='display:none;width:100px' id='ClassID'>");document.write ("<option value='' selected>请选择</option>");document.write ("</select>");