var photo = new Array()
var photoNum = 0

photo[0] ="images/royal-caribbean/1.jpg"
photo[1] ="images/royal-caribbean/2.jpg"
photo[2] ="images/royal-caribbean/3.jpg"
photo[3] ="images/royal-caribbean/4.jpg"
photo[4] ="images/royal-caribbean/5.jpg"
photo[5] ="images/royal-caribbean/6.jpg"
photo[6] ="images/royal-caribbean/7.jpg"
photo[7] ="images/royal-caribbean/8.jpg"
photo[8] ="images/royal-caribbean/9.jpg"
photo[9] ="images/royal-caribbean/10.jpg"
photo[10] ="images/royal-caribbean/11.jpg"
photo[11] ="images/royal-caribbean/12.jpg"
photo[12] ="images/royal-caribbean/13.jpg"
photo[13] ="images/royal-caribbean/14.jpg"
photo[14] ="images/royal-caribbean/15.jpg"
photo[15] ="images/royal-caribbean/16.jpg"
photo[16] ="images/royal-caribbean/17.jpg"
photo[17] ="images/royal-caribbean/18.jpg"
photo[18] ="images/royal-caribbean/19.jpg"
photo[19] ="images/royal-caribbean/20.jpg"
photo[20] ="images/royal-caribbean/21.jpg"
photo[21] ="images/royal-caribbean/22.jpg"
photo[22] ="images/royal-caribbean/23.jpg"
photo[23] ="images/royal-caribbean/24.jpg"
photo[24] ="images/royal-caribbean/25.jpg"
photo[25] ="images/royal-caribbean/26.jpg"
photo[26] ="images/royal-caribbean/27.jpg"
photo[27] ="images/royal-caribbean/28.jpg"
photo[28] ="images/royal-caribbean/29.jpg"
photo[29] ="images/royal-caribbean/30.jpg"
photo[30] ="images/royal-caribbean/31.jpg"
photo[31] ="images/royal-caribbean/32.jpg"
photo[32] ="images/royal-caribbean/33.jpg"
photo[33] ="images/royal-caribbean/34.jpg"
photo[34] ="images/royal-caribbean/35.jpg"
photo[35] ="images/royal-caribbean/36.jpg"
photo[36] ="images/royal-caribbean/37.jpg"
photo[37] ="images/royal-caribbean/38.jpg"
photo[38] ="images/royal-caribbean/39.jpg"
photo[39] ="images/royal-caribbean/40.jpg"
photo[40] ="images/royal-caribbean/41.jpg"
photo[41] ="images/royal-caribbean/42.jpg"
photo[42] ="images/royal-caribbean/43.jpg"
photo[43] ="images/royal-caribbean/44.jpg"
photo[44] ="images/royal-caribbean/45.jpg"
photo[45] ="images/royal-caribbean/46.jpg"
photo[46] ="images/royal-caribbean/47.jpg"
photo[47] ="images/royal-caribbean/48.jpg"
photo[48] ="images/royal-caribbean/49.jpg"
photo[49] ="images/royal-caribbean/50.jpg"
photo[50] ="images/royal-caribbean/51.jpg"
photo[51] ="images/royal-caribbean/52.jpg"
photo[52] ="images/royal-caribbean/53.jpg"
photo[53] ="images/royal-caribbean/54.jpg"
photo[54] ="images/royal-caribbean/55.jpg"
photo[55] ="images/royal-caribbean/56.jpg"
photo[56] ="images/royal-caribbean/57.jpg"
photo[57] ="images/royal-caribbean/58.jpg"
photo[58] ="images/royal-caribbean/59.jpg"
photo[59] ="images/royal-caribbean/60.jpg"
photo[60] ="images/royal-caribbean/61.jpg"
photo[61] ="images/royal-caribbean/62.jpg"
photo[62] ="images/royal-caribbean/63.jpg"
photo[63] ="images/royal-caribbean/64.jpg"
photo[64] ="images/royal-caribbean/65.jpg"
photo[65] ="images/royal-caribbean/66.jpg"
photo[66] ="images/royal-caribbean/67.jpg"
photo[67] ="images/royal-caribbean/68.jpg"
photo[68] ="images/royal-caribbean/69.jpg"
photo[69] ="images/royal-caribbean/70.jpg"
photo[70] ="images/royal-caribbean/71.jpg"
photo[71] ="images/royal-caribbean/72.jpg"
photo[72] ="images/royal-caribbean/73.jpg"
photo[73] ="images/royal-caribbean/74.jpg"
photo[74] ="images/royal-caribbean/75.jpg"
photo[75] ="images/royal-caribbean/76.jpg"
photo[76] ="images/royal-caribbean/77.jpg"
photo[77] ="images/royal-caribbean/78.jpg"
photo[78] ="images/royal-caribbean/79.jpg"
photo[79] ="images/royal-caribbean/80.jpg"
photo[80] ="images/royal-caribbean/81.jpg"
photo[81] ="images/royal-caribbean/82.jpg"
photo[82] ="images/royal-caribbean/83.jpg"
photo[83] ="images/royal-caribbean/84.jpg"
photo[84] ="images/royal-caribbean/85.jpg"
photo[85] ="images/royal-caribbean/86.jpg"
photo[86] ="images/royal-caribbean/87.jpg"
photo[87] ="images/royal-caribbean/88.jpg"
photo[88] ="images/royal-caribbean/89.jpg"
photo[89] ="images/royal-caribbean/90.jpg"
photo[90] ="images/royal-caribbean/91.jpg"
photo[91] ="images/royal-caribbean/92.jpg"
photo[92] ="images/royal-caribbean/93.jpg"
photo[93] ="images/royal-caribbean/94.jpg"
photo[94] ="images/royal-caribbean/95.jpg"
photo[95] ="images/royal-caribbean/96.jpg"
photo[96] ="images/royal-caribbean/97.jpg"
photo[97] ="images/royal-caribbean/98.jpg"
photo[98] ="images/royal-caribbean/99.jpg"
photo[99] ="images/royal-caribbean/100.jpg"
photo[100] ="images/royal-caribbean/101.jpg"
photo[101] ="images/royal-caribbean/102.jpg"
photo[102] ="images/royal-caribbean/103.jpg"
photo[103] ="images/royal-caribbean/104.jpg"
photo[104] ="images/royal-caribbean/105.jpg"
photo[105] ="images/royal-caribbean/106.jpg"
photo[106] ="images/royal-caribbean/107.jpg"
photo[107] ="images/royal-caribbean/108.jpg"
photo[108] ="images/royal-caribbean/109.jpg"
photo[109] ="images/royal-caribbean/110.jpg"
photo[110] ="images/royal-caribbean/111.jpg"
photo[111] ="images/royal-caribbean/112.jpg"
photo[112] ="images/royal-caribbean/113.jpg"
photo[113] ="images/royal-caribbean/114.jpg"
photo[114] ="images/royal-caribbean/115.jpg"
photo[115] ="images/royal-caribbean/116.jpg"
photo[116] ="images/royal-caribbean/117.jpg"
photo[117] ="images/royal-caribbean/118.jpg"
photo[118] ="images/royal-caribbean/119.jpg"
photo[119] ="images/royal-caribbean/120.jpg"
photo[120] ="images/royal-caribbean/121.jpg"
photo[121] ="images/royal-caribbean/122.jpg"
photo[122] ="images/royal-caribbean/123.jpg"
photo[123] ="images/royal-caribbean/124.jpg"
photo[124] ="images/royal-caribbean/125.jpg"
photo[125] ="images/royal-caribbean/126.jpg"
photo[126] ="images/royal-caribbean/127.jpg"
photo[127] ="images/royal-caribbean/128.jpg"

function forward() {
  if (photoNum < photo.length - 1) {
    photoNum = photoNum + 1;
    document.images.gallery.src=photo[photoNum];
  }
  else {
    photoNum = 0;
    document.images.gallery.src=photo[photoNum];
  }
  imageNum();
}

function backward() {
  if (photoNum > 0) {
    photoNum = photoNum - 1;
    document.images.gallery.src=photo[photoNum];
  }
  else {
    photoNum = photo.length - 1;
    document.images.gallery.src=photo[photoNum];
  }
  imageNum();
}

function imageNum() {
  var imagediv = document.getElementById("position-string");
  imagediv.innerHTML = (photoNum + 1) + " of " + photo.length;
}