jabelone:
Also pull-up resistors are just normal resistors that pull the line up aren't they? Also wouldn't you need pull-down resistors because the code detects the switch and blinks when it is High?
thanks heaps,
Jabelone
It looks as if the switches tie the inputs to ground. In that case you need to use pull-up resistors - your Arduino has ones that can be enabled by the software. The idea is that when the switch is open the resistors hold the input high; when the switch is closed it overrides the resistors and pulls the input low.
Whether you consider the 'high' or 'low' states to be active in terms of the behaviour of your sketch is a completely separate issue - you can code it either way round.