How can I raise higher than the amount in boxes, called call and raise? Also how can I type during the game?

How can I raise higher than the amount in boxes, called call and raise? Also how can I type during the game?

http://www.screenr.com/shI

click on the box itself, tipe new numbers in.

type in the chat box? just hoover the mouse cursor over the bottom chatline. then click on it