var gallery_array = {"2011": {"2011_09_24_glacier_basin": {"display": "Glacier Basin", "images": ["IMG_1670.jpg","IMG_1682.jpg","IMG_1688.jpg","IMG_1704.jpg","IMG_1713.jpg","IMG_1714.jpg","IMG_1721.jpg","IMG_1722.jpg","IMG_1728.jpg","IMG_1743.jpg","IMG_1755.jpg","IMG_1758.jpg","IMG_1761.jpg","IMG_1765.jpg","IMG_1774.jpg","IMG_1779.jpg","IMG_1788.jpg","IMG_1792.jpg","IMG_1798.jpg","IMG_1807.jpg","IMG_1816.jpg","IMG_1819.jpg","IMG_1824.jpg","IMG_1851.jpg","IMG_1871.jpg","IMG_1887.jpg"]}, 
"2011_10_09_scenic_fall_drive": {"display": "Scenic Fall Drive", "images": ["IMG_1910.jpg","IMG_1913.jpg","IMG_1918.jpg","IMG_1939.jpg","IMG_1960.jpg","IMG_1973.jpg","IMG_1980.jpg","IMG_2009.jpg","IMG_2011.jpg"]}, 
"2011_10_16_mt_baker": {"display": "Mt Baker", "images": ["IMG_2033.jpg","IMG_2053.jpg","IMG_2059.jpg","IMG_2067.jpg","IMG_2070.jpg","IMG_2073.jpg","IMG_2088.jpg","IMG_2089.jpg","IMG_2096.jpg","IMG_2104.jpg","IMG_2112.jpg"]}, 
"2011_11_20_lime_kiln": {"display": "Lime Kiln", "images": ["IMG_2054.jpg","IMG_2060.jpg","IMG_2068.jpg","IMG_2069.jpg","IMG_2073.jpg"]}, 
"2011_11_25_pittock_mansion": {"display": "Pittock Mansion", "images": ["IMG_2155.jpg","IMG_2162.jpg","IMG_2164.jpg","IMG_2170.jpg","IMG_2176.jpg","IMG_2181.jpg","IMG_2182.jpg"]}, 
"2011_11_26_grotto_lights": {"display": "Grotto Lights", "images": ["IMG_2212.jpg","IMG_2238.jpg","IMG_2240.jpg","IMG_2263.jpg","IMG_2280.jpg"]}, 
"2011_12_17_cabin_on_camano": {"display": "Cabin On Camano", "images": ["IMG_2331.jpg","IMG_2333.jpg","IMG_2337.jpg","IMG_2347.jpg","IMG_2352.jpg","IMG_2358.jpg"]}}, 
"2012": {"2012_01_08_lanham_lake": {"display": "Lanham Lake", "images": ["IMG_2420.jpg","IMG_2443.jpg","IMG_2454.jpg","IMG_2467.jpg","IMG_2484.jpg","IMG_2508.jpg","IMG_2511.jpg"]}, 
"2012_01_14_snow_at_home": {"display": "Snow At Home", "images": ["IMG_2550.jpg","IMG_2553.jpg","IMG_2571.jpg","IMG_2574.jpg","IMG_2585.jpg","IMG_2629.jpg"]}, 
"2012_01_28_kitsap": {"display": "Kitsap", "images": ["IMG_12674.jpg","IMG_22683.jpg","IMG_32256.jpg","IMG_42259.jpg","IMG_52267.jpg","IMG_62713.jpg","IMG_72288.jpg","IMG_82290.jpg","IMG_92299.jpg","IMG_992300.jpg"]}, 
"2012_02_18_missoula": {"display": "Missoula", "images": ["IMG_2370.jpg","IMG_2371.jpg","IMG_2378.jpg","IMG_2720.jpg"]}, 
"2012_02_19_mount_rushmore": {"display": "Mount Rushmore", "images": ["IMG_2762.jpg","IMG_2768.jpg","IMG_2771.jpg","IMG_2774.jpg"]}, 
"2012_02_22_tulsa_birdwatching": {"display": "Tulsa Birdwatching", "images": ["IMG_2782.jpg","IMG_2785.jpg","IMG_2792.jpg","IMG_2796.jpg","IMG_2801.jpg","IMG_2805.jpg","IMG_2806.jpg","IMG_2814.jpg","IMG_2820.jpg","IMG_2830.jpg","IMG_2832.jpg","IMG_2838.jpg"]}, 
"2012_02_24_tulsa_riverwalk": {"display": "Tulsa Riverwalk", "images": ["IMG_3086.jpg","IMG_3109.jpg","IMG_3112.jpg","IMG_3120.jpg","IMG_3133.jpg"]}, 
"2012_02_24_tulsa_woodward_park": {"display": "Tulsa Woodward Park", "images": ["IMG_2918.jpg","IMG_2923.jpg","IMG_2938.jpg","IMG_2953.jpg","IMG_2979.jpg","IMG_2982.jpg","IMG_2992.jpg","IMG_3010.jpg","IMG_3012.jpg","IMG_3017.jpg","IMG_3019.jpg","IMG_3043.jpg","IMG_3046.jpg","IMG_3053.jpg","IMG_3062.jpg"]}, 
"2012_02_25_oklahoma_city_bombing_memorial": {"display": "Oklahoma City Bombing Memorial", "images": ["IMG_3435.jpg","IMG_3436.jpg","IMG_3437.jpg","IMG_3448.jpg","IMG_3453.jpg","IMG_3460.jpg","IMG_3462.jpg"]}, 
"2012_02_25_oklahoma_city_bricktown": {"display": "Oklahoma City Bricktown", "images": ["IMG_3395.jpg","IMG_3414.jpg","IMG_3423.jpg","IMG_3428.jpg","IMG_3429.jpg"]}, 
"2012_02_25_oklahoma_city_myriad_gardens": {"display": "Oklahoma City Myriad Gardens", "images": ["IMG_3153.jpg","IMG_3154.jpg","IMG_3160.jpg","IMG_3162.jpg","IMG_3201.jpg","IMG_3204.jpg","IMG_3209.jpg","IMG_3212.jpg","IMG_3223.jpg","IMG_3227.jpg","IMG_3229.jpg","IMG_3232.jpg","IMG_3248.jpg","IMG_3274.jpg","IMG_3278.jpg","IMG_3282.jpg","IMG_3288.jpg","IMG_3296.jpg","IMG_3313.jpg","IMG_3345.jpg","IMG_3377.jpg","IMG_3380.jpg","IMG_3384.jpg","IMG_3385.jpg","IMG_3388.jpg","IMG_3392.jpg"]}, 
"2012_07_29_big_four_ice_caves": {"display": "Big Four Ice Caves", "images": ["IMG_5060.jpg","IMG_5077.jpg","IMG_5085.jpg","IMG_5095.jpg","IMG_5109.jpg","IMG_5110.jpg","IMG_5116.jpg","IMG_5131.jpg"]}, 
"2012_07_29_upper_skagit_river": {"display": "Upper Skagit River", "images": ["IMG_5142.jpg","IMG_5145.jpg","IMG_5166.jpg","IMG_5185.jpg","IMG_5197.jpg","IMG_5199.jpg","IMG_5210.jpg","IMG_5212.jpg","IMG_5223.jpg","IMG_5240.jpg","IMG_5246.jpg","IMG_5253.jpg"]}, 
"2012_12_30_wenatchee_crest": {"display": "Wenatchee Crest", "images": ["IMG_6390.jpg","IMG_6396.jpg","IMG_6413.jpg","IMG_6430.jpg","IMG_6439.jpg","IMG_6448.jpg","IMG_6462.jpg","IMG_6469.jpg","IMG_6474.jpg","IMG_6484.jpg","IMG_6493.jpg","IMG_6521.jpg","IMG_6523.jpg","IMG_6540.jpg","IMG_6543.jpg","IMG_6558.jpg"]}}, 
"2013": {"2013_01_20_gold_creek": {"display": "Gold Creek", "images": ["IMG_6654.jpg","IMG_6657.jpg","IMG_6669.jpg","IMG_6694.jpg","IMG_6709.jpg","IMG_6716.jpg","IMG_6718.jpg","IMG_6720.jpg","IMG_6721.jpg","IMG_6725.jpg","IMG_6755.jpg","IMG_6760.jpg","IMG_6772.jpg","IMG_6780.jpg","IMG_6788.jpg","IMG_6791.jpg","IMG_6800.jpg","IMG_6802.jpg","IMG_6815.jpg","IMG_6820.jpg","IMG_6830.jpg"]}, 
"2013_01_21_frost_at_home": {"display": "Frost At Home", "images": ["IMG_6864.jpg","IMG_6866.jpg","IMG_6881.jpg","IMG_6888.jpg","IMG_6924.jpg","IMG_6937.jpg","IMG_6945.jpg","IMG_6946.jpg","IMG_6957.jpg"]}, 
"2013_01_21_poo_poo_point": {"display": "Poo Poo Point", "images": ["IMG_6971.jpg","IMG_6979.jpg","IMG_6984.jpg","IMG_6987.jpg","IMG_7008.jpg","IMG_7014.jpg","IMG_7025.jpg","IMG_7038.jpg","IMG_7039.jpg","IMG_7058.jpg","IMG_7060.jpg","IMG_7078.jpg"]}, 
"2013_02_10_UW_botanic_garden": {"display": "UW Botanic Garden", "images": ["IMG_7292.jpg","IMG_7294.jpg","IMG_7299.jpg","IMG_7312.jpg","IMG_7323.jpg","IMG_7327.jpg","IMG_7331.jpg","IMG_7336.jpg","IMG_7340.jpg","IMG_7352.jpg","IMG_7357.jpg","IMG_7362.jpg","IMG_7374.jpg"]}}};

var all_pictures = new Array();
function get_image_list() {
  for(key in gallery_array) {
    for(key2 in gallery_array[key]) {
      for(key3 in gallery_array[key][key2]['images']) {
        image_url = key2 + '/' + gallery_array[key][key2]['images'][key3];
        all_pictures.push(image_url);
      }
    }
  }
}

function get_years() {
  selectbox = document.getElementById('year_picker');
  add_option(selectbox,'Select a Year','');
  for(key in gallery_array) {
    add_option(selectbox,key,key);
  }
}

function check_request() {
  if (typeof gallery != 'undefined') {
    validate_and_load_gallery(gallery);
  }
}

function get_galleries() {
  selectbox = document.getElementById('gallery_picker');
  remove_all_options(selectbox);
  add_option(selectbox,'Select a Gallery','');
  for(key in gallery_array) {
    if(key == document.getElementById('year_picker').value) {
      for(key2 in gallery_array[key]) {
        add_option(selectbox,gallery_array[key][key2]['display'],key2);
      }
    }
  }
}

function remove_all_options(selectbox) {
  var i;
  for(i=selectbox.options.length-1;i>=0;i--) {
    selectbox.remove(i);
  }
}

function add_option(selectbox,text,value) {
  var new_option = document.createElement('OPTION');
  new_option.text = text;
  new_option.value = value;
  selectbox.options.add(new_option);
}

function set_dropdown(selectbox,value) {
  for (var i = 0; i < selectbox.options.length; i++) {
    if (selectbox.options[i].value === value) {
      selectbox.selectedIndex = i;
      break;
    }
  }
}

function load_gallery(dir) {
  if (dir != '') {
    var box = document.getElementById('gallery_container');
    while(box.firstChild) {
      box.removeChild(box.firstChild);
    }
    
    var year = dir.substr(0,4);
    var gallery_title = document.getElementById('gallery_title');
    var gallery_date = document.getElementById('gallery_date');
    gallery_title.innerText = gallery_array[year][dir]['display'];
    var date_string = dir.substr(0,10);
    date_string = date_string.replace(/_/g," - ");
    gallery_date.innerText = date_string;
    
    // set gallery link
    var url_box = document.getElementById('gallery_url');
    url_box.value = 'http://www.kenkistler.com/gallery.php?g=' + dir;
    url_box.size = url_box.value.length + 20;
    
    // show scroll_to_top button
    document.getElementById('scroll_button').style.visibility = 'visible';
   
    // add images to DOM
    for(key in gallery_array[year][dir]['images']) {
	  image_url = 'pictures/' + dir + '/' + gallery_array[year][dir]['images'][key];
      var image = document.createElement('img');
  	  image.setAttribute('src',image_url);
  	  box.appendChild(image);
  	}
  }
}

function validate_and_load_gallery(gallery) {
  var year = gallery.substr(0,4);
  if(year in gallery_array) {
    if(gallery in gallery_array[year]) {
      set_dropdown(document.getElementById('year_picker'),year);
      get_galleries();
      set_dropdown(document.getElementById('gallery_picker'),gallery);
      load_gallery(gallery);
    }
  }
}

function date_today() {
  var d = new Date();
  document.write(d.getFullYear() + ' - ' + ('0' + (d.getMonth() + 1)).slice(-2) + ' - ' + ('0' + d.getDate()).slice(-2));
}

// center image based on size, padding, and border
function center_image(img) {
  img.parentNode.style.marginLeft = '-' + Math.floor(img.offsetWidth / 2) + 'px';
  img.parentNode.style.top = '-' + Math.floor(img.offsetHeight / 2) + 'px';
  img.parentNode.style.visibility = 'visible';
}

// place gallery link in correct spot for given image size
function place_link(img, link) {
  link.style.top = Math.floor(img.offsetHeight / 2) + 10 + 'px';
}

function toggle_display(obj, delay) {
  if(obj.style.display != 'inline') {
    setTimeout(function() { obj.style.display = 'inline'; }, delay);
  } else {
    setTimeout(function() { obj.style.display = 'none'; }, delay);
  }
}

function toggle_link(obj) {
  if(obj.style.display != 'inline') {
    var link_box = document.getElementById('link_box');
    link_box.className = "link_box_expanded";
    link_box.firstChild.className = "link_box_img_exp";
    link_box.firstChild.title = 'Hide Link';
    toggle_display(obj, 300);
    document.getElementById('gallery_url').focus();
    document.getElementById('gallery_url').select();
  } else {
    var link_box = document.getElementById('link_box');
    link_box.className = "link_box";
    link_box.firstChild.className = "link_box_img";
    link_box.firstChild.title = 'Show Link';
    toggle_display(obj, 0);
  }
}

/* deprecated */
function scroll_to_top() {
  var distance = self.pageYOffset;
  var speed = Math.round(distance / 100);
  if (speed >= 20) speed = 20;
  var step = Math.round(distance / 25);
  var move_y = distance - step;
  var timer = 0;
  for (var i=distance; i>0; i-=step) {
    setTimeout("window.scrollTo(0, "+move_y+")", timer * speed);
    move_y -= step;
    if (move_y < 0) move_y = 0;
    timer++;
  }
}

function element_y_position(id) {
  var node = document.getElementById(id);
  var y = node.offsetTop;
  while (node.offsetParent && node.offsetParent != document.body) {
    node = node.offsetParent;
    y += node.offsetTop;
  }
  return y;
}

function scroll_to_element(id) {
  var start = self.pageYOffset;
  var stop = element_y_position(id);
  var distance = stop - start;
  if (Math.abs(distance) < 4) {
    window.scrollTo(0, stop);
    return;
  }
  var step = (distance > 0) ? Math.ceil(distance / 8) : Math.floor(distance / 8);
  start += step;
  window.scrollTo(0, start);
  setTimeout(function(){scroll_to_element(id);},8);
}


//----------------------------------------------------------------------------------------
// The Central Randomizer 1.3 (C) 1997 by Paul Houle (houle@msc.cornell.edu)
// See:  http://www.msc.cornell.edu/~houle/javascript/randomizer.html

rnd.today=new Date();
rnd.seed=rnd.today.getTime();

function rnd() {
        rnd.seed = (rnd.seed*9301+49297) % 233280;
        return rnd.seed/(233280.0);
};

function rand(number) {
        return Math.ceil(rnd()*number);
};

// end central randomizer. -->