<object id="DemoActiveX" classid="clsid:AA5DCFC0-4C88-4124-A627-C1475A4FF523" codebase="ActiveXSetup.cab#version=1.0.0"></object>

<script type="text/javascript">
        var obj = document.DemoActiveX;
        $('#TerminalDropDownList').Value(obj.GetRegistry('Cod_Terminal'));
            terminal_var = obj.GetRegistry('Cod_Terminal');
            var txtInput = document.getElementById("txtTerminalValor");
            txtInput.value = terminal_var;
</script>