Code:
var data = [{dept: 'Marketing', user: []},{dept: 'IT', user: []},{dept: 'Accounting', user: []}];
function initCombo(){
var opt1 = document.getElementById('opt1');
var opt2 = document.getElementById('opt2');
for(var i=0;i<data.length;i++){
//alert(data[i].dept);
var