In HTML5, how do I return the results of an SQLite call directly, rather than handing them to a function?

Using SQLite in HTML5, how do I execute a call such as the following so that it's returned immediately, instead of passing off the result to another function?

try {
    mydb.transaction( function(transaction) {
        transaction.executeSql(
            'SELECT name FROM celebs order by name limit 100 ',
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            function(transaction, results) {
                // would like to return the "results" back
            },
            errorHandler
        );
    });
    // code to use the "results" array
} catch(e) {
    alert(e.message);
}

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You can't. Because JavaScript is asynchronous, it doesn't give you any way to block until a blocking operation completes.