$(document).ready(function() {
  $(".main_image .block").animate({ opacity: 0.65 }, 1);
  $(".image_thumb ul li:first").addClass('active'); //runs function on click
  $(".image_thumb ul li").click(function() {
    var imgAlt = $(this).find('img').attr("alt");
    var imgTitle = $(this).find('a').attr("href");
    var imgDesc = $(this).find('.block').html();
    var imgDescHeight = 295;

    if ($(this).is(".active")) {
      return false;
    } else {
      $(".main_image .block").animate({ opacity: 0, marginBottom: -imgDescHeight }, 250, function() {
        $(".main_image img").attr({ src: imgTitle, alt: imgAlt });
      });
    }
    $("a.collapse").click(function() {
      $(".main_image .block").slideToggle();
      $("a.collapse").toggleClass("show");
    });

    $(".image_thumb ul li").removeClass('active');
    $(this).addClass('active');
    return false; $active = $(this);
    slideSwitchClick();
  })
.hover(function() {

  $(this).addClass('hover');
  clearInterval(playSlideshow);
  playSlideshow = setInterval('slideSwitchTimed()', 7000);
}, function() {
  $(this).removeClass('hover');
});

  //runs function, set timer here
  $(function() {
    playSlideshow = setInterval('slideSwitchTimed()', 7000);
  });
  //pauses on hover
  $('.block').hover(function() {
    clearInterval(playSlideshow);
  });


});

function slideSwitchTimed() {
  $active = $('.image_thumb ul li.active').next();
  if ($active.length == 0) $active = $('.image_thumb ul li:first');
  slideSwitch();
}

function slideSwitchClick() {
  slideSwitch();
}

function slideSwitch() {
  var $prev = $('.image_thumb ul li.active');

  //Show active list-item
  $prev.removeClass('active');
  $active.addClass('active');

  //Set Variables
  var imgAlt = $active.find('img').attr("alt");
  var imgTitle = $active.find('a').attr("href");
  var imgDesc = $active.find('.block').html();
  var imgDescHeight = $(".main_image").find('.block').height();

  if ($(this).is(".active")) {
    return false;
  } else {

    $(".main_image img").animate({ opacity: 0 }, 250);
    $(".main_image .block").animate({ opacity: 0, marginBottom: -imgDescHeight }, 250, function() {
      $(".main_image .block").html(imgDesc).animate({ opacity: 0.85, marginBottom: "0" }, 250);
      $(".main_image img").attr({ src: imgTitle, alt: imgAlt }).animate({ opacity: 1 }, 250);
    });
  }
  return false;
}