For future reference, when using global variables shared by both the ISR and main loop you should define the variable as volatile. In your example it should be:
volatile int state = 0;
http://arduino.cc/en/Reference/Volatile
Lefty
For future reference, when using global variables shared by both the ISR and main loop you should define the variable as volatile. In your example it should be:
volatile int state = 0;
http://arduino.cc/en/Reference/Volatile
Lefty