$(document).ready(function(){
        function formatItem(row) {
                return row[0] + " - " + row[1];
        }
        function formatResult(row) {
                return row[1].replace(/(<.+?>)/gi, '');
        }

        $("#var").autocomplete("/ajax.php", {
                width: 190,
                selectFirst: false,
                matchContains: true,
                formatItem: formatItem,
                formatResult: formatResult
        });
        $("#var").result(function(event, data, formatted) {
                if (data)
                        $('#dato').val(data[2]);
        });

        $("#press").click(function() {
                var nivel=$('#nivel').val();
                var dato=$('#dato').val();
                var ret = nivel*dato;
                var ret1 = Math.ceil(ret);
                $('#ret').val(ret1);
                $('#ret').format({format:"#,###", locale:"es"}); 
        });
});