Changes

[http://twlai1.blogspot.com/2008/10/thats-very-abort-retry-ignore-build-wow.html Lab 4: Thunderbird Bug] <br />

[http://twlai1.blogspot.com/2008/10/mozilla-lab-tab-cr-i-mean-rap-yes-rap.html Lab 5: Tabs] <br />

[http://twlai1.blogspot.com/2008/11/extend-your-knowledge-into-mozilla.html Lab 7: Extensions] <br />

[http://twlai1.blogspot.com/2008/11/lab.html Lab 8: My first xpcom!] <br />