//arrays for thumb pictures
var hiThumbArray = new Array();
var offThumbArray = new Array();

//arrays for gallery signs
var hiTGalArray = new Array();
var offTGalArray = new Array();

function myPreloadThumbs() { 
//Preload the thumb pictures
  hiThumbArray[0] = new Image(100,80);
  hiThumbArray[0].src = "thumbnails/brooklyn-1t.jpg";
  offThumbArray[0] = new Image(100,80);
  offThumbArray[0].src = "thumbnails/brooklyn-1tp.jpg";

  hiThumbArray[1] = new Image(57,100);
  hiThumbArray[1].src = "thumbnails/brooklyn-2t.jpg";
  offThumbArray[1] = new Image(57,100);
  offThumbArray[1].src = "thumbnails/brooklyn-2tp.jpg";

  hiThumbArray[2] = new Image(100,61);
  hiThumbArray[2].src = "thumbnails/manhattan-t.jpg";
  offThumbArray[2] = new Image(100,61);
  offThumbArray[2].src = "thumbnails/manhattan-tp.jpg";

  hiThumbArray[3] = new Image(100,70);
  hiThumbArray[3].src = "thumbnails/bratislava-t.jpg";
  offThumbArray[3] = new Image(100,70);
  offThumbArray[3].src = "thumbnails/bratislava-tp.jpg";

  hiThumbArray[4] = new Image(100,68);
  hiThumbArray[4].src = "thumbnails/new-orleans-t.jpg";
  offThumbArray[4] = new Image(100,68);
  offThumbArray[4].src = "thumbnails/new-orleans-tp.jpg";

  hiThumbArray[5] = new Image(66,100);
  hiThumbArray[5].src = "thumbnails/memphis-1t.jpg";
  offThumbArray[5] = new Image(66,100);
  offThumbArray[5].src = "thumbnails/memphis-1tp.jpg";

  hiThumbArray[6] = new Image(66,100);
  hiThumbArray[6].src = "thumbnails/memphis-2t.jpg";
  offThumbArray[6] = new Image(66,100);
  offThumbArray[6].src = "thumbnails/memphis-2tp.jpg";

  hiThumbArray[7] = new Image(100,69);
  hiThumbArray[7].src = "thumbnails/memphis-3t.jpg";
  offThumbArray[7] = new Image(100,69);
  offThumbArray[7].src = "thumbnails/memphis-3tp.jpg";

  hiThumbArray[8] = new Image(67,100);
  hiThumbArray[8].src = "thumbnails/beale-street-t.jpg";
  offThumbArray[8] = new Image(67,100);
  offThumbArray[8].src = "thumbnails/beale-street-tp.jpg";

  hiThumbArray[9] = new Image(100,74);
  hiThumbArray[9].src = "thumbnails/budget-shop-t.jpg";
  offThumbArray[9] = new Image(100,74);
  offThumbArray[9].src = "thumbnails/budget-shop-tp.jpg";

  hiThumbArray[10] = new Image(71,100);
  hiThumbArray[10].src = "thumbnails/slot-canyon-1-t.jpg";
  offThumbArray[10] = new Image(71,100);
  offThumbArray[10].src = "thumbnails/slot-canyon-1-tp.jpg";

  hiThumbArray[11] = new Image(100,69);
  hiThumbArray[11].src = "thumbnails/death-valley-1t.jpg";
  offThumbArray[11] = new Image(100,69);
  offThumbArray[11].src = "thumbnails/death-valley-1tp.jpg";

  hiThumbArray[12] = new Image(100,56);
  hiThumbArray[12].src = "thumbnails/hatchie-river-t.jpg";
  offThumbArray[12] = new Image(100,56);
  offThumbArray[12].src = "thumbnails/hatchie-river-tp.jpg";

  hiThumbArray[13] = new Image(69,100);
  hiThumbArray[13].src = "thumbnails/tennessee-fall-1-t.jpg";
  offThumbArray[13] = new Image(69,100);
  offThumbArray[13].src = "thumbnails/tennessee-fall-1-tp.jpg";

  hiThumbArray[14] = new Image(100,24);
  hiThumbArray[14].src = "thumbnails/tennessee-fall-2-t.jpg";
  offThumbArray[14] = new Image(100,24);
  offThumbArray[14].src = "thumbnails/tennessee-fall-2-tp.jpg";

  hiThumbArray[15] = new Image(80,80);
  hiThumbArray[15].src = "thumbnails/louisiana-t.jpg";
  offThumbArray[15] = new Image(80,80);
  offThumbArray[15].src = "thumbnails/louisiana-tp.jpg";

  hiThumbArray[16] = new Image(79,80);
  hiThumbArray[16].src = "thumbnails/new-orleans-2-t.jpg";
  offThumbArray[16] = new Image(79,80);
  offThumbArray[16].src = "thumbnails/new-orleans-2-tp.jpg";

  hiThumbArray[17] = new Image(80,80);
  hiThumbArray[17].src = "thumbnails/new-orleans-3-t.jpg";
  offThumbArray[17] = new Image(80,80);
  offThumbArray[17].src = "thumbnails/new-orleans-3-tp.jpg";

  hiThumbArray[18] = new Image(100,68);
  hiThumbArray[18].src = "thumbnails/manhattan-beach-t.jpg";
  offThumbArray[18] = new Image(100,68);
  offThumbArray[18].src = "thumbnails/manhattan-beach-tp.jpg";

  hiThumbArray[19] = new Image(100,72);
  hiThumbArray[19].src = "thumbnails/harlem-t.jpg";
  offThumbArray[19] = new Image(100,72);
  offThumbArray[19].src = "thumbnails/harlem-tp.jpg";

  hiThumbArray[20] = new Image(100,59);
  hiThumbArray[20].src = "thumbnails/coney-island-t.jpg";
  offThumbArray[20] = new Image(100,59);
  offThumbArray[20].src = "thumbnails/coney-island-tp.jpg";

  hiThumbArray[21] = new Image(80,80);
  hiThumbArray[21].src = "thumbnails/new-york-city-t.jpg";
  offThumbArray[21] = new Image(80,80);
  offThumbArray[21].src = "thumbnails/new-york-city-tp.jpg";

  hiThumbArray[22] = new Image(100,74);
  hiThumbArray[22].src = "thumbnails/union-square-t.jpg";
  offThumbArray[22] = new Image(100,74);
  offThumbArray[22].src = "thumbnails/union-square-tp.jpg";

  hiThumbArray[23] = new Image(100,67);
  hiThumbArray[23].src = "thumbnails/penn-station-t.jpg";
  offThumbArray[23] = new Image(100,67);
  offThumbArray[23].src = "thumbnails/penn-station-tp.jpg";


//Preload the gallery signs
  var n;
  for (n=0; n<5; n++) {
    hiTGalArray[n] = new Image(86,30);
    hiTGalArray[n].src = "pic/thumb/tg" + (n+1) + "h.gif";
    offTGalArray[n] = new Image(86,30);
    offTGalArray[n].src = "pic/thumb/tg" + (n+1) + ".gif";
  };
}
function mySwapThumbs(picNum) {
  if ((document.images) && (offThumbArray[23] != null)) {
    document.images["Thumb" + picNum].src = hiThumbArray[picNum-1].src;
//    document.images["ThumbGal" + (Math.floor((picNum-1)/5)+1)].src = hiTGalArray[Math.floor((picNum-1)/5)].src;
  }
}
function myRestoreThumbs(picNum) {
  if ((document.images) && (offThumbArray[23] != null)) {
    document.images["Thumb" + picNum].src = offThumbArray[picNum-1].src;
//    document.images["ThumbGal" + (Math.floor((picNum-1)/5)+1)].src = offTGalArray[Math.floor((picNum-1)/5)].src;
  }
}
function mySwapGal(galNum) {
  if ((document.images) && (offTGalArray[4] != null)) {
    document.images["ThumbGal" + galNum].src = hiTGalArray[galNum-1].src;
  }
}
function myRestoreGal(galNum) {
  if ((document.images) && (offTGalArray[4] != null)) {
    document.images["ThumbGal" + galNum].src = offTGalArray[galNum-1].src;
  }
}