var number = 3;
	var src = new Array();
	for (i=1; i<number+1; i++) {
    src[i] = "/assets/images/imgs/photo"+i+".jpg";
  }
  function replacer() {
    var randomnumber2;
    do {
      randomnumber2=Math.floor(Math.random()*(number+1))
    } while (randomnumber2>number || randomnumber2=='undefined' || randomnumber2==0 || randomnumber2==randomnumber);
    document.getElementById('photo').src = src[randomnumber2];
    return randomnumber = randomnumber2;
  }