Long Timed Arc Welder

/* for long time-period reference
  4,294,967,295   millisecs
  4,294,967   seconds
  71,583      minutes
  1,193     hours
  50      days
*/

#define ledPin  5   // LED connected to digital pin 9
#define ledPin2 4   // LED connected to digital pin 9
#define toggle  7

int weldingTable[][2] ={{3,5}, {2, 3}};

int i, j, count;

unsigned long offTimeDelay;
unsigned long onTimeDelay;

long t1;

// since it's not being initialized, both dimension must be define explicity
long delayTable[2][2];

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(toggle, INPUT_PULLUP);

  // do time-conversion once to save on repeated multiplications
  for (i=0; i<2; i++) {
    delayTable[i][0] = weldingTable[i][0] * 60000;
    delayTable[i][1] = weldingTable[i][1] * 60000;
  }
}

void loop() {

  if (digitalRead(toggle) == LOW) {       //begin one major cycle

    for (i=0; i<2; i++) {         //assign time periods
      onTimeDelay = delayTable[i][0];
      offTimeDelay = delayTable[i][1];

      t1 = millis();          //start timing the 'on' period

      while ((millis()-t1) < onTimeDelay) {   //while 'on' time hasn't run out

        // but if user wants 'out', begin breaking out here
        if (digitalRead(toggle) != LOW) break;

        ////setup a random amount of flashing and do the flashing
        count = random(10, 80);
        for (j=0; j<count; j++) {
          digitalWrite(ledPin, HIGH);   // flash one LED
          delay(random(50));
          digitalWrite(ledPin2, HIGH);    // and then the other
          delay(random(20));
          digitalWrite(ledPin, LOW);    // then turn them both off
          digitalWrite(ledPin2, LOW);
          delay(random(200));     // brief pause
        }
        delay(random(800, 2000));     //pause before resume flashing
      }
      // 'on' time has run out, so reset timer and begin the 'off' time cycle
      t1 = millis();

      while((millis()-t1) < offTimeDelay){
        // and complete breaking out of process here
        if (digitalRead(toggle) != LOW) break;
      }

    // 'off' time is done, so go back and do it again for the second set of time periods
    }
  // both time periods have been completed, check and see if user wants to do it all over again
  }
}