// Define slideshow control icons
var pauseb_src  = new Image();
var pauseb_src2 = new Image();
var playeb_src  = new Image();
var playb_src2  = new Image();
var rewb_src    = new Image();
var rewb_src2   = new Image();
var ffwb_src    = new Image();
var ffwb_src2   = new Image();

pauseb_src  = "images/generic/Button-Pause-icon-32.png";
pauseb_src2 = "images/generic/Button-Pause2-icon-32.png";
playb_src   = "images/generic/Button-Play-icon-32.png";
playb_src2  = "images/generic/Button-Play2-icon-32.png";
rewb_src    = "images/generic/Button-Rewind-icon-32.png";
rewb_src2   = "images/generic/Button-Rewind2-icon-32.png";
ffwb_src    = "images/generic/Button-Fast-Forward-icon-32.png";
ffwb_src2   = "images/generic/Button-Fast-Forward2-icon-32.png";

var picnum = 0; // Picture currently displayed
var intval,stop_picnum = 0;
var show_playing = 0;
var img_height_normal = 350;

// Images in slideshow
var img_array_2009 = new Array (
  "images/2009pics/Larry_Hoyt/WestcottSky600.jpg",
  "images/2009pics/Larry_Hoyt/Ashley2-600.jpg",
  "images/2009pics/Larry_Hoyt/BallyDancing600.jpg",
  "images/2009pics/Larry_Hoyt/Bergman2-600.jpg",
  "images/2009pics/Larry_Hoyt/BobbyGreen1000.jpg",
  "images/2009pics/Larry_Hoyt/DavidKristin600.jpg",
  "images/2009pics/Larry_Hoyt/Dennis and His Dog600.jpg",
  "images/2009pics/Larry_Hoyt/HoopJumpin1000.jpg",
  "images/2009pics/Larry_Hoyt/Isreal600.jpg",
  "images/2009pics/Larry_Hoyt/IverDan600.jpg",
  "images/2009pics/Larry_Hoyt/MollyNaef600.jpg",
  "images/2009pics/Larry_Hoyt/Rozatones600.jpg",
  "images/2009pics/Larry_Hoyt/StoreFront600.jpg",
  "images/2009pics/Larry_Hoyt/TheArtist600.jpg",
  "images/2009pics/Larry_Hoyt/TomDick600.jpg",
  "images/2009pics/Larry_Hoyt/TomKnight600.jpg",
  "images/2009pics/Larry_Hoyt/axe600.jpg",
  "images/2009pics/George_Newcomb/MediaUnit.jpg",
  "images/2009pics/George_Newcomb/SchoolKids1000.jpg",
  "images/2009pics/Georgette_Nicholaides/gn 006.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 007.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 008.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 009.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 010.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 011.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 012.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 025.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 029.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 033.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 043.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 045.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 050.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 053.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 057.JPG",
  "images/2009pics/Georgette_Nicholaides/gn 068.JPG",
  "images/2009pics/Georgette_Nicholaides/gn_raffle.jpg",
  "images/2009pics/Janet_Detoto/LHWSCF-byJanetMMM.jpg",
  "images/2009pics/Janet_Detoto/boy_on_rack.bmp",
  "images/2009pics/Janet_Detoto/westcottfest_tired.jpg",
  "images/2009pics/Janet_Detoto/westcottfestbarb046.jpg",
  "images/2009pics/Janet_Detoto/westcottfestdance_162.jpg",
  "images/2009pics/Janet_Detoto/westcottfestival_026.jpg",
  "images/2009pics/Kevin_Maue/classical.jpg",
  "images/2009pics/Wendy_Colucci/Heather.jpg",
  "images/2009pics/Wendy_Colucci/Jack_Stephanie.jpg"
);

var img_array_2008 = new Array (
  "images/2008pics/Bob_Gates/Gates-Westcott-2008-01.jpg",
  "images/2008pics/Bob_Gates/Gates-Westcott-2008-02.jpg",
  "images/2008pics/Bob_Gates/Gates-Westcott-2008-03.jpg",
  "images/2008pics/Bob_Gates/Gates-Westcott-2008-04.jpg",
  "images/2008pics/Bob_Gates/Gates-Westcott-2008-05.jpg",
  "images/2008pics/Bob_Gates/Gates-Westcott-2008-07.jpg",
  "images/2008pics/Bob_Gates/Gates-Westcott-2008-08.jpg",
  "images/2008pics/Bob_Gates/Gates-Westcott-2008-12.jpg",
  "images/2008pics/Bob_Gates/Gates-Westcott-2008-15.jpg",
  "images/2008pics/Caroline_Dimmick/Caroline - Emerging Artists.JPG",
  "images/2008pics/Caroline_Dimmick/Caroline - Face Painting.JPG",
  "images/2008pics/Caroline_Dimmick/Caroline - Morris Dancers.JPG",
  "images/2008pics/Caroline_Dimmick/Caroline - Multicultural Stage.JPG",
  "images/2008pics/Caroline_Dimmick/Caroline - Stage.JPG",
  "images/2008pics/Caroline_Dimmick/Caroline - Street 1.JPG",
  "images/2008pics/Caroline_Dimmick/Caroline - Street 2.JPG",
  "images/2008pics/Caroline_Dimmick/Caroline - Street 3.JPG",
  "images/2008pics/Caroline_Dimmick/Caroline - Street 4.JPG",
  "images/2008pics/Caroline_Dimmick/Caroline - Street 6.JPG",
  "images/2008pics/Caroline_Dimmick/Caroline - Street 8.JPG",
  "images/2008pics/Caroline_Dimmick/Caroline Musican.JPG",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 004.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 015.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 016.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 018.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 021.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 022.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 025.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 031.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 033.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 034.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 035.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 036.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 039.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 041.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 046.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 047.jpg",
  "images/2008pics/Jason_Eaton/WSCF Sharon's Camera 048.jpg"
);

var img_array_2007 = new Array (
  "images/2007pics/Tracey_Gotham/003_1.JPG",
  "images/2007pics/Tracey_Gotham/005_3.JPG",
  "images/2007pics/Tracey_Gotham/005_3A.JPG",
  "images/2007pics/Tracey_Gotham/007_4.JPG",
  "images/2007pics/Tracey_Gotham/008_6A.JPG",
  "images/2007pics/Tracey_Gotham/009_6A.JPG",
  "images/2007pics/Tracey_Gotham/009_7A.JPG",
  "images/2007pics/Tracey_Gotham/011_8A.JPG",
  "images/2007pics/Tracey_Gotham/011_9.JPG",
  "images/2007pics/Tracey_Gotham/013_10.JPG",
  "images/2007pics/Tracey_Gotham/013_11.JPG",
  "images/2007pics/Tracey_Gotham/014_11.JPG",
  "images/2007pics/Tracey_Gotham/014_11A.JPG",
  "images/2007pics/Tracey_Gotham/014_12A.JPG",
  "images/2007pics/Tracey_Gotham/016_13.JPG",
  "images/2007pics/Tracey_Gotham/016_14A.JPG",
  "images/2007pics/Tracey_Gotham/017_14.JPG",
  "images/2007pics/Tracey_Gotham/017_15.JPG",
  "images/2007pics/Tracey_Gotham/017_15A.JPG",
  "images/2007pics/Tracey_Gotham/018_15A.JPG",
  "images/2007pics/Tracey_Gotham/019_16A.JPG",
  "images/2007pics/Tracey_Gotham/019_17A.JPG",
  "images/2007pics/Tracey_Gotham/020_17.JPG",
  "images/2007pics/Tracey_Gotham/020_18A.JPG",
  "images/2007pics/Tracey_Gotham/021_18.JPG",
  "images/2007pics/Tracey_Gotham/021_19.JPG",
  "images/2007pics/Tracey_Gotham/021_19A.JPG",
  "images/2007pics/Tracey_Gotham/022_19A.JPG",
  "images/2007pics/Tracey_Gotham/022_20.JPG",
  "images/2007pics/Tracey_Gotham/024_21.JPG",
  "images/2007pics/Tracey_Gotham/024_21A.JPG",
  "images/2007pics/Tracey_Gotham/024_22.JPG",
  "images/2007pics/Tracey_Gotham/024_22A.JPG",
  "images/2007pics/Tracey_Gotham/025_23.JPG",
  "images/2007pics/Tracey_Gotham/026_24A.JPG",
  "images/2007pics/Tracey_Gotham/027_24.JPG",
  "images/2007pics/Tracey_Gotham/028_25.JPG",
  "images/2007pics/Tracey_Gotham/030_27.JPG",
  "images/2007pics/Tracey_Gotham/033_30.JPG",
  "images/2007pics/Tracey_Gotham/034_31.JPG",
  "images/2007pics/Tracey_Gotham/037_34.JPG",
  "images/2007pics/Tracey_Gotham/039_36.JPG",
  "images/2007pics/Tracey_Gotham/09-23 (12)a.jpg",
  "images/2007pics/Tracey_Gotham/09-23 (7).JPG",
  "images/2007pics/Tracey_Gotham/09-23 (8).JPG",
  "images/2007pics/Tracey_Gotham/09-23_12a.jpg",
  "images/2007pics/Tracey_Gotham/09-23_7.jpg",
  "images/2007pics/Tracey_Gotham/09-23_8.jpg",
  "images/2007pics/Tracey_Gotham/2007.jpg",
  "images/2007pics/Tracey_Gotham/BootsBC1.jpg",
  "images/2007pics/Tracey_Gotham/Demonstrators1.jpg",
  "images/2007pics/Tracey_Gotham/DrummingBC1.jpg",
  "images/2007pics/Tracey_Gotham/IrishSession2M.jpg",
  "images/2007pics/Tracey_Gotham/KevinDorseyBandM.jpg",
  "images/2007pics/Tracey_Gotham/Lisa4M.jpg",
  "images/2007pics/Tracey_Gotham/RAGING~1M.jpg",
  "images/2007pics/Tracey_Gotham/Raging_M.jpg",
  "images/2007pics/Tracey_Gotham/Roosevelt2M.jpg",
  "images/2007pics/Tracey_Gotham/SignatureBandM.jpg"
);

var img_array_2006 = new Array (
  "images/2006pics/Westcott_Fair/2006.jpg",
  "images/2006pics/Westcott_Fair/50782.jpg",
  "images/2006pics/Westcott_Fair/50785.jpg",
  "images/2006pics/Westcott_Fair/50798.jpg",
  "images/2006pics/Westcott_Fair/50800.jpg",
  "images/2006pics/Westcott_Fair/50824.jpg",
  "images/2006pics/Westcott_Fair/50857.jpg",
  "images/2006pics/Westcott_Fair/50911.jpg",
  "images/2006pics/Westcott_Fair/50941.jpg",
  "images/2006pics/Westcott_Fair/p1010001.jpg",
  "images/2006pics/Westcott_Fair/p1010003.jpg",
  "images/2006pics/Westcott_Fair/p1010005.jpg",
  "images/2006pics/Westcott_Fair/westcott 002.jpg",
  "images/2006pics/Westcott_Fair/westcott 013.jpg",
  "images/2006pics/Westcott_Fair/westcott005.jpg",
  "images/2006pics/Westcott_Fair/westcott011.jpg",
  "images/2006pics/Westcott_Fair/westcott012.jpg",
  "images/2006pics/Westcott_Fair/westcott013.jpg",
  "images/2006pics/Westcott_Fair/westcott046.jpg"
);

var img_array_vintage = new Array (
  "images/2005pics/Westcott_Fair/2005.jpg",
  "images/2005pics/Westcott_Fair/DSCF0001.jpg",
  "images/2005pics/Westcott_Fair/DSCF0007.jpg",
  "images/2005pics/Westcott_Fair/DSCF0012.jpg",
  "images/2005pics/Westcott_Fair/DSCF0017.jpg",
  "images/2005pics/Westcott_Fair/DSCF0019.jpg",
  "images/2005pics/Westcott_Fair/DSCF0026.jpg",
  "images/2005pics/Westcott_Fair/DSCF0033.jpg",
  "images/2005pics/Westcott_Fair/DSCF0036.jpg",
  "images/2005pics/Westcott_Fair/DSCF0039.jpg",
  "images/2005pics/Westcott_Fair/DSCF0040.jpg",
  "images/2005pics/Westcott_Fair/DSCF0046.jpg",
  "images/2005pics/Westcott_Fair/DSCF0047.jpg",
  "images/2005pics/Westcott_Fair/DSCF0050.jpg",
  "images/2005pics/Westcott_Fair/DSCF0055.jpg",
  "images/2005pics/Westcott_Fair/DSCF0056.jpg",
  "images/2005pics/Westcott_Fair/DSCF0057.jpg",
  "images/2005pics/Westcott_Fair/DSCF0058.jpg",
  "images/2005pics/Westcott_Fair/WSCF_2005_007.jpg",
  "images/2005pics/Westcott_Fair/WSCF_2005_017.jpg",
  "images/2005pics/Westcott_Fair/WSCF_2005_018.jpg",
  "images/2005pics/Westcott_Fair/WSCF_2005_020.jpg",
  "images/2005pics/Westcott_Fair/WSCF 2004 photo3.jpg",
  "images/2005pics/Westcott_Fair/WSCF026.jpg",
  "images/2005pics/Westcott_Fair/WSCF032.jpg",
  "images/2005pics/Westcott_Fair/WSCF034.jpg",
  "images/2005pics/Westcott_Fair/WSCF036.jpg",
  "images/2005pics/Westcott_Fair/WSCF039.jpg",
  "images/2005pics/Westcott_Fair/WSCF042.jpg",
  "images/2005pics/Westcott_Fair/WSCF044.jpg"
);

// Set default images to 2009 fair
img_array = img_array_2009;

// Function that controls slidehow automatically
function slideshow() {
  
  intval = setInterval("changeImage()",3000);
  // The side show should run through the entire show and stop on the picture 
  // that is started on. This may not be the first picture in the list due to
  // user intervention
  stop_picnum = picnum; 
  show_playing = 1;

}

function changeImage() {

  picnum++;
  // If the last picture in list is reached, return to beginning of list
  if (picnum == img_array.length) {
    picnum = 0;
  }
  // Stop the slideshow if the starting picture is reached
  if (picnum == stop_picnum) {
    clearInterval(intval);
    show_playing = 0;
  }
  document["imgdisp"].src = img_array[picnum];

  // Determine photo credit based on image pathname
  var img_name = img_array[picnum];
  var img_name_split = img_name.split("/");
  var name_split = img_name_split[2].split("_");
  var cred_name = "  Photo Credit: ";
  var i;

  for (i = 0; i < name_split.length; i++) {
    cred_name = cred_name + " " + name_split[i];
  }

  document.getElementById('photo_credit').innerHTML = cred_name;  

}

// Function executed when play button is pressed
function playShow() {
  // Only start the slideshow if it is not currently playing
  if (!show_playing) {
    slideshow();
  }
}

// Function executed when pause button is pressed
function pauseShow() {
  // Only pause the slideshow if it is currently playing
  if (show_playing) {
    clearInterval(intval);
    show_playing = 0;
  }
}

// Function to move forward through the list of pictures
function advanceShow() {
  // Stop show and advance image before restarting show, to maintain slide show
  // speed if the show is currently playing
  if (show_playing) {
    pauseShow();
    changeImage();
    playShow()
  }
  // If show is not playing, just advance the picture
  else {
    changeImage();
  }
}
 
// Function to move backwards through the list of pictures
function reverseShow() {
  picnum -= 2;
  if (picnum < -1) {
    picnum = img_array.length-2;
  }
  // Now that we have backed up two pictures, follow the logic in the
  // advanceShow function
  advanceShow();
}

function activateTab(year) {

  // Switch active tab style
  var acttab = document.getElementById("activetab");
  if (acttab) {
    acttab.setAttribute("id","tab");
  }

  // Change heading
  var welcome = document.getElementsByTagName("h2")[0];
  // Object for slideshow image tag
  var img = document.getElementsByTagName("img")[1];

  // switch image list
  switch(year) {
    case 2009:
      img_array = img_array_2009;
      span_name = "tab2009";
      welcome.innerHTML = "Pictures from the 2009 Westcott Street Cultural Fair";
      img.height=img_height_normal;
      break;
    case 2008:
      img_array = img_array_2008;
      span_name = "tab2008";
      welcome.innerHTML = "Pictures from the 2008 Westcott Street Cultural Fair";
      img.height=img_height_normal;
      break;    
    case 2007:
      img_array = img_array_2007;
      span_name = "tab2007";
      welcome.innerHTML = "Pictures from the 2007 Westcott Street Cultural Fair";
      img.height=img_height_normal;
      break;    
    case 2006:
      img_array = img_array_2006;
      span_name = "tab2006";
      welcome.innerHTML = "Pictures from the 2006 Westcott Street Cultural Fair";
      img.height=img_height_normal/1.5;
      break;    
    case 0: // Old images without their own tab
      img_array = img_array_vintage;
      span_name = "tabvintage";
      welcome.innerHTML = "Pictures from Westcott Street Cultural Fair Gone By";
      img.height=img_height_normal/1.5;
      break;    
  }

  var span_tags = document.getElementsByTagName("span");

  for (i=0;i < span_tags.length; i++) {
    if (span_tags[i].name == span_name) {
      span_tags[i].setAttribute("id","activetab");
    }
  }

  // start show at beginning (changeImage will advance 1)
  picnum = -1;
  if (show_playing) {
    pauseShow();
  }
  changeImage();
  playShow();

}