var ClassOfService = '0';
function SetClassOptions(classofservice)
{
ClassOfService = classofservice;
var eles = document.getElementsByTagName('Select');
for(var i=0;i<eles.length;i++)
{
if(eles[i].id.indexOf('class')>=0 )
{
var tmp = eles[i].value;
eles[i].length = 0;
eles[i].options[0] = new Option('--Select--','0');
eles[i].options[1] = new Option('Economy','2');
if(classofservice=='2')
{
eles[i].options[2] = new Option('Premium Economy','1');
eles[i].options[3] = new Option('Business','3');
}
//alert(1);
var itmp = parseInt(tmp);
switch(itmp)
{
case 1: