lab12 fixed

update: index.html

update: task1.js

update: index.html

lab12 finished

lab10 fixed

update: index.html

update: index.html

update: server.js

lab11 finished

update: index.html

update: server.js

task10 finished

update: index.html

lab9 finished

update: index.html

update: index.html

lab8 finished

lab7 finished