function gcdfunction(a, b) {  // THIS FUNCTION GENERATES THE GREATEST COMMON DIVISOR BUT I'M GETTING A CONSOLE ERROR THAT { IS AN UNEXPECTED TOKEN
   var gcd;
    if ( ! b) {
        return a;
    }

    return gcd(b, a % b); // I'M ALSO GETTING AN ERROR THAT THIS IS UNDEFINED
};

function randomBetween (min, max) { //THIS FUNCTION GENERATES A RANDOM NUMBER BETWEEN A GIVEN MIN & MAX
  var ceiling = max + 1;
  return Math.floor(Math.random() * (ceiling - min)) + min;
}

function GenerateRandomNumber3to9Excluding (min, max, b) {
  var random;
  var gcd;
  do {
     random = randomBetween(min, max);
     gcd = gcdfunction(random, b); // THIS IS INTENDED TO CALL THE GCDFUNCTION DEFINED ABOVE
  } while((gcd > 1)); // IF THE GCD > 1, IT GENERATES ANOTHER RANDOM NUMBER
  alert(random);
}