Android : Error processing SQL:0 PhoneGap SQL and Inserting Data

I created an android app using html5 and phonegap and I have a problem in inserting data into database..

this is my code

    document.addEventListener("deviceready", onDeviceReady(), false);
    var db;

    function onDeviceReady(){
        db = window.openDatabase("Libsys", "2.0", "LibraryDB", 200000); //will create  database Dummy_DB or open it
        db.transaction(populateDB, errorCB, successCB);

    }


    function populateDB(tx) {
        tx.executeSql('CREATE TABLE IF NOT EXISTS Borrowinfo(id INTEGER PRIMARY KEY AUTOINCREMENT, IDno TEXT NOT NULL, Name TEXT NOT NULL, course TEXT NOT NULL, author TEXT NOT NULL, title TEXT NOT NULL, date_start TEXT NOT NULL, date_return TEXT NOT NULL)');
    }


    function queryDB(tx){
            tx.executeSql('SELECT * FROM Borrowinfo', [], querySuccess, errorCB);

    }

    function querySuccess(tx,results){

             var len = results.rows.length;
             for (var i = 0; i < len; i++) {
                 var row = results.rows.item(i);
                    $("#Lists").append("<li><a href='#'>"+row['Name']+" "+row['course']+"</a></li>");
              }
            $("#Lists").listview("refresh");
    }



    function SaveContacts(idno,fullname,course,author,title,dstart,dreturn){
        //alert(""+idno+" "+fullname+"");
        db.transaction(function(tx){
        var idno = document.getElementById("idno").value;
        var fullname = document.getElementById("names").value;
        var course = document.getElementById("course").value;
        var author = document.getElementById("author").value;
        var title = document.getElementById("title").value;
        var dstart = document.getElementById("dstart").value;
        var dreturn = document.getElementById("dreturn").value;
            tx.executeSql('INSERT INTO Borrowinfo(IDno,name,course,author,title,date_start,date_return) VALUES (?,?,?,?,?,?,?)', [idno,fullname,course,author,title,dstart,dreturn], querySuccess);
            alert("Record Save!");
        });

    }


    function errorCB(err) {
        alert("Error processing SQL: "+err.code);
    }


    function successCB() {
        db.transaction(queryDB,errorCB);
    }

im having an error in the function querySuccess.. the error message is (undefined is not a function querySuccess)

Please, correct me and also help me to fixed the error... thank you..