function zgmm()
{
//当前发生事件的对象的父对象的上一个兄弟对象
var ero = event.srcElement.parentElement.previousSibling;
//当前发生事件的对象的父对象的父对象的下一个兄弟对象
var mo = event.srcElement.parentElement.parentElement.nextSibling;
mo.style.display = (mo.style.display=="none")?"block":"none";
ero.innerHTML = (mo.style.display=="none")?"0":"1";
}
</script>
</head>
function redirect(x){
for (m=temp.options.length-1;m>0;m--)
temp.options[m]=null
for (i=0;i<group[x].length;i++){
temp.options[i]=new Option(group[x][i].text,group[x][i].value)
}
temp.options[0].selected=true
redirect1(0)
}
var secondGroups=document.isc.stage2.options.length
var secondGroup=new Array(groups)
for (i=0; i<groups; i++) {
secondGroup[i]=new Array(group[i].length)
for (j=0; j<group[i].length; j++) {
secondGroup[i][j]=new Array() }}
var temp1=document.isc.stage3
function redirect1(y){
for (m=temp1.options.length-1;m>0;m--)
temp1.options[m]=null
for (i=0;i<secondGroup[document.isc.example.options.selectedIndex][y].length;i++){
temp1.options[i]=new Option(secondGroup[document.isc.example.options.selectedIndex][y][i].text,secondGroup[document.isc.example.options.selectedIndex][y][i].value)
}
temp1.options[0].selected=true
}
function redirect2(z){
//window.location=temp1[z].value
}