insert listbox items in database using javascript

Question

hi,
i used javascript(on double click) for moving items from first listbox to second listbox..
and want to second listbox items store in database
but i am fail to do this..
hard work and hard search i ask you here.
so please help me...i need the solution for my site..

i have two tables
1) star_master
and
2) profile_star


two listboxes
1) lst_leftstar
2) lst_rightstar

lst_leftstar is display(load) from star_aster table
and lst_rightstar will be blank..

select(doubleclcik on) items for move items lst_leftstar to lst_rightstar
and lst_rightstar items will be store in database....
i tried too much..but my coding is failed here...
coz when i click on submit button "lst_rightstar" show me 0 items in loop.

my javascript coding is :=

 

 

 

<script type="text/javascript"> /* star */

function lst_left_star_DblClicked() {

var left_lst = document.getElementById("<%=lst_leftstar.ClientID%>");

var right_lst = document.getElementById("<%=lst_rightstar.ClientID%>");

for (var i = 0; i < left_lst.length; i++) {

if (left_lst.options[i].selected == true) {

right_lst.options[right_lst.length] =

new Option(left_lst.options[i].text,

left_lst.options[i].value);

left_lst.options[i] = null;

i = i - 1;

}

}

return;

}

</script>

<script type="text/javascript">

function lst_right_star_DblClicked() {

var left_lst = document.getElementById("<%=lst_leftstar.ClientID%>");

var right_lst = document.getElementById("<%=lst_rightstar.ClientID%>");

for (var i = 0; i < right_lst.length; i++) {

if (right_lst.options[i].selected == true) {

left_lst.options[left_lst.length] = new Option(right_lst.options[i].text, right_lst.options[i].value);

right_lst.options[i] = null;

i = i - 1;

}

}

return;

}

</script>

<asp:ListBox ID="lst_leftstar" onDblClick="lst_left_star_DblClicked();" runat="server"

Height="100px" Width="180px"></asp:ListBox>

<asp:ListBox ID="lst_rightstar" onDblClick="lst_right_star_DblClicked();" runat="server"

Height="100px" Width="180px"></asp:ListBox>

 

 .............

please tell me how can i stored my listbox items in database.
i tried but not success...

please tell me how can i insert this listbox data in database..

please give me simple coding