SQLite database in JavaScript locally

I'm using a PhoneGap project on Xcode. I am trying to connect to a SQLite database by using JavaScript.

I have made a file, "myDatabase.sqlite", in an SQLite tool. How do I open that database in my code?

Right now I'm using the following code:

var db;
var shortName = 'myDatabase';
var version = '1.0';
var displayName = 'myDatabase';
var maxSize = 65535;


db = openDatabase(shortName, version, displayName, maxSize);

db.transaction(function(transaction) {
    transaction.executeSql('SELECT * FROM User;', [],
    function(transaction, result) {

        if (result != null && result.rows != null) {
            for (var i = 0; i < result.rows.length; i++) {
                var row = result.rows.item(i);
                alert(row.ID);
            }
        }
    }, errorHandler);
}, errorHandler, nullHandler);

The problem is that the database is empty, because when I run it, it gives the error 'No such table'. I think it created a new database named "myDatabase" and that’s why it doesn't have any tables.

How can I open my file with all the tables in it?