var len = results.rows.length;
alert(len);

function readRecord(){
    var db = window.openDatabase("dbResults", "1.0", "Results DB", 1000000);
     db.transaction(getRecord, errorCB);
}

function getRecord(tx){
    try
    {
        tx.executeSql('SELECT [time], bglevel FROM RECORDS', [], recordSuccess, errorCB);
    }
    catch(err)
    {
        alert(err.message);
    }
}
function recordSuccess(tx, results) {
    var len = results.rows.length;
    alert(len);
    var res = '';
    for (var i=0; i<len; i++){
        try
        {
            alert("Row = " + i.toString() + " Time =  " + results.rows.item(i).time);
            alert("Row = " + i.toString() + " BG =  " + results.rows.item(i).bglevel);
        }
        catch(err)
        {
            alert(err.message);
        }
        res = res + '(' +  results.rows.item(i).time + '|' + results.rows.item(i).bglevel + '),';
        alert(res);
    }
}

(undefined,undefined),
(undefined,undefined),
(undefined,undefined),
(undefined,undefined),