did it...complete works...
<script type="text/javascript">
function lstDblClicked() {
var left_lst = document.getElementById("<%=_lbBox.ClientID%>");
var right_lst = document.getElementById("<%=_lbBox0.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 lstDblClicked1() {
var left_lst = document.getElementById("<%=_lbBox.ClientID%>");
var right_lst = document.getElementById("<%=_lbBox0.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>
*************************************************
<form id="form1" runat="server">
<div>
<asp:ListBox ID="_lbBox" runat="server" Height="100px" Width="100px">
<asp:ListItem Value="1" Text="One" />
<asp:ListItem Value="2" Text="Two" />
<asp:ListItem Value="3" Text="Three" />
<asp:ListItem Value="4" Text="Four" />
</asp:ListBox>
<asp:ListBox ID="_lbBox0" runat="server" ondblClick="RequestNoteSubjectSelectListbox_DoubleClick(this)"
Height="100px" Width="100px">
<asp:ListItem>vvvv</asp:ListItem>
</asp:ListBox>
</div>
</form>