Google is gearing up!

GoogleGearsDemo.js

var recentPhrases = ['', '', ''];

// We re-throw Gears exceptions to make them play nice with certain tools.
// This will be unnecessary in a future version of Gears.
try 
{
    // Get the 3 most recent entries. Delete any others.
    var rs = db.execute('select * from Demo order by Timestamp desc');
    var index = 0;
    while (rs.isValidRow()) 
    {
        if (index < 3) 
        {
            recentPhrases[index] = rs.field(0);
        } 
        else 
        {
            db.execute('delete from Demo where Timestamp=?', [rs.field(1)]);
        }
        ++index;
        rs.next();
    }
    rs.close();
} 
catch (e) 
{
    throw new Error(e.message);
}