<script type="text/javascript">$(document).ready(function(){$("#ffe_units").change(onSelectChange);});
            function onSelectChange(){
                var selected = $("#ffe_units option:selected");
        
                if(selected.val() == 0) { $("#land_unit").html(selected.val()); }
                if(selected.val() == 1) { $("#land_unit").html(selected.val()); }
                if(selected.val() == 2) { $("#land_unit").html(selected.val()); }
            }
        </script>

$("#land_unit").html(selected.text());