Update asp session with javascript values

Hi, I have tried my best to get this working but I cannot go any further. I have working code on my website but am having difficulty incorporating a new function into the code.

There are 3 files in this project:

global.inc
OneForm.asp
OneForm.js.inc

I have a set of values in global.inc


Session("ListAttributes")	= [

	    ["Standard Saloon",     ["01. Saloon [SAL]"]],
            ["Executive Saloon",     ["07. Executive Saloon [EXEC-SAL]"]],
            ["Estate Vehicle",     ["02. Estate [EST]"]],
            ["People Carrier",     ["03. 5 Seater [5ST]"]],
            ["8 Seater Vehicle",     ["06. 8 Seater [8ST]"]]		
						
				];

At the top of my form OneForm.asp there is a function that takes the values from global.inc and places them in a session called VehAttr


var vehAttr  = new Array();

if (Session("ListAttributes"))
{
    var la = Session("ListAttributes");

    for (i = 0; i < la.length; i++)
    {
        vehAttr[i] = la[i][0];

        for (j = 0; j < la[i][1].length; j++)
        {
            Session("InvisibleDefaultVA")[la[i][1][j]] = false;
        }
    }
}

Session("VehAttr") = vehAttr;

They are also used in a drop down menu.


<%
      if (vehAttr.length > 0)
      {
%>

<select id="DDvehAttr" class="FormField" onchange="DDvehAttrChanged(this)" >
              <option value="-2">Please Select . . .</option>
<%
              for (i=0; i < vehAttr.length; i++)
              {%>
              <option value="<% = i %>"><% = vehAttr[i] %></option>
              <%}
%>
            </select>

<%
      }
%>

This all works fine.

There is another function in OneForm.js.inc that repopulates my drop down.


function Repopulate_DD2(){
var dd2=document.getElementById('DDvehAttr');
dd2.options.length=0;
for(var i=0; i<=AS_Airport.dd2options.length-1;i++){
var optn = document.createElement("OPTION");
optn.text = AS_Airport.dd2options[i][0];
optn.value = i-1;
dd2.options.add(optn);
}

}

This function uses the following values which are also held in OneForm.js.inc:


var AS_Airport =
    {
    group :
        "Heathrow Airport",

    premise:
        "Flight Number (eg VS401 Dubai)",

    shortcuts :
        [           

        ["HEATHROW TERMINAL 1", "Heathrow Airport - Terminal 1"],
        ["HEATHROW TERMINAL 3", "Heathrow Airport - Terminal 3"],
        ["HEATHROW TERMINAL 4", "Heathrow Airport - Terminal 4"],
        ["HEATHROW TERMINAL 5", "Heathrow Airport - Terminal 5"]
    
        ], 
    dd2options : 
        [
            
	    ["Please Select . . .",     [" "]],
            ["Standard Saloon",  [ "01. Saloon [SAL]", "30. Meet & Greet [M&G]" ]],
            ["Executive Saloon",  [ "07. Executive Saloon [EXEC-SAL]", "30. Meet & Greet [M&G]" ]],
            ["Estate Vehicle",  [ "02. Estate [EST]", "30. Meet & Greet [M&G]" ]],
            ["People Carrier",  [ "03. 5 Seater [5ST]", "30. Meet & Greet [M&G]" ]],
            ["8 Seater Vehicle",  [ "06. 8 Seater [8ST]", "30. Meet & Greet [M&G]" ]]
     
    
            ]
     
    };


    var AddressShortcuts = [AS_Airport];


This all works fine. When the function runs it repopulates the drop down with no errors.

However, I need these new values (in addition to repopulating the drop down) to update the vehAttr session. I do not know how to update the session with these new values.

I presume this involves combining the 2 functions below and then refreshing the form.


function Repopulate_DD2(){
var dd2=document.getElementById('DDvehAttr');
dd2.options.length=0;
for(var i=0; i<=AS_Airport.dd2options.length-1;i++){
var optn = document.createElement("OPTION");
optn.text = AS_Airport.dd2options[i][0];
optn.value = i-1;
dd2.options.add(optn);
}

}

var vehAttr  = new Array();

if (Session("ListAttributes"))
{
    var la = Session("ListAttributes");

    for (i = 0; i < la.length; i++)
    {
        vehAttr[i] = la[i][0];

        for (j = 0; j < la[i][1].length; j++)
        {
            Session("InvisibleDefaultVA")[la[i][1][j]] = false;
        }
    }
}

Session("VehAttr") = vehAttr;

I cannot get my head round this. Can someone please assist me.