function get_rnd(rn1, rn2) {
  if (rn2 > rn1) return (Math.round(Math.random()*(rn2-rn1))+rn1);
  else return (Math.round(Math.random()*(rn1-rn2))+rn2);
}

function MkAry(n){
        this.length = n;
        for (var i= 1; i<=n; i++){
         		this[i] = 0}
        return this
}