JavaScript 为Select添加节点

function addOption(){
var startYearObj = document.enterpriseQueryForm.startYear;
var endYearObj = document.enterpriseQueryForm.endYear;
var today = new Date();
var intYear = today.getYear();

for(var i=intYear; i>=1985; i--){
var strName = i;
var strvalue = i;
// 建立Option对象
var objOption = new Option(strName,strvalue);
startYearObj.add(objOption);
}

for(var i=intYear; i>=1985; i--){
var strName = i;
var strvalue = i;
// 建立Option对象
var objOption = new Option(strName,strvalue);
endYearObj.add(objOption);
}