function doDestinations()
{
	var dest = document.forms["Form1"].elements["ctlAvailCriteria_cboDest"]
	var sel= document.forms["Form1"].elements["ctlAvailCriteria_cboOrigin"];
	var selected = document.forms["Form1"].elements["ctlAvailCriteria_cboOrigin"].value;
	for (var i = dest.options.length; i >= 0; i--)
		dest.options[i] = null;
	if (sel.selectedIndex == 0){
		dest.options[0] = new Option('Destination Airport');
		dest.options[0].value =  'Destination Airport';
	}

	for(var i=0;i<x.length;i++){
		  if (x[i] == selected){
		         var options = n[i];
			     if (options == ""){
					 break;
			 	}
			 	var opt = options.split(",");
		 		dest.options[0] = new Option('Destination Airport');
				dest.options[0].value =  'Destination Airport';

			 	for(var t=1;t<opt.length+1;t++){
			         dest.options[t] = new Option(s[opt[t-1]]);
					 dest.options[t].value = x[opt[t-1]];
			 	}
			 	break;
			}
	}

}

function showRT()
{
    document.getElementById("ctlAvailCriteria_cboRetDay").style.visibility = 'visible';
    document.getElementById("ctlAvailCriteria_cboRetMon").style.visibility = 'visible';
    document.getElementById("cal_trigger_return").style.visibility = 'visible';
    document.getElementById("lblReturnTD").style.visibility='visible';
}
function hideRT()
{
    document.getElementById("ctlAvailCriteria_cboRetDay").style.visibility = 'hidden';
    document.getElementById("ctlAvailCriteria_cboRetMon").style.visibility = 'hidden';
    document.getElementById("cal_trigger_return").style.visibility = 'hidden';
    if($("lblReturnTD") != null) $("lblReturnTD").style.visibility='hidden';
}

function AddItem(Text,Value)
{
 		var opt = document.createElement("option");
        document.getElementById("ctlAvailCriteria_cboOrigin").options.add(opt);
        opt.text = Text;
        opt.value = Value;

}

for (i=0;i<s.length;i++)
{AddItem(s[i],x[i]);}
doDestinations();