(1) When the input field gets focus, background-color change into yellow and return to white when blurred.
Enter your name: First Last

(2)

(Hint: bulbon image is at http://www.w3schools.com/js/bulbon.gif)

(3)

Select Text Color :
Select Background Color :

(4) Lotto Number (6 numbers between 1 and 45) generator : (Hint: Math.random())

(5) Mouse Over Me

(6) Tip Calculator : $ Subtotal : %Tip : Your total : $0.00 (Hint: parseFloat())

(7) Alarm : sec (Hint: parseInt())

(8) Convert (Hint: lb = kg * 2.20462262, kg = lb * 0.45359237)

(9) Digital Clock :