var subsecondClass = new Array(); var subthirdClass = new Array(); subsecondClass[0] = new Array('42','32','课程需求') subsecondClass[1] = new Array('43','32','功能问题') subsecondClass[2] = new Array('59','51','开业前期支持') subsecondClass[3] = new Array('60','51','日常支持') 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; i1) { 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; i1) { document.getElementById('ClassID').style.display=''; }else{ document.getElementById('ClassID').style.display='none'; } } document.write (""); document.write (" "); document.write (" ");