var num6=0;

imgArray6 = [
  ['http://movermoms.org/programs/bookclub/previous/book6/photo_01.jpg','photo 1 mouseover text'],
  ['http://movermoms.org/programs/bookclub/previous/book6/photo_02.jpg','photo 2 mouseover text'],
  ['http://movermoms.org/programs/bookclub/previous/book6/photo_03.jpg','photo 3 mouseover text'],
  ['http://movermoms.org/programs/bookclub/previous/book6/photo_04.jpg','photo 4 mouseover text']
  ]
function slideshow6(slide_num) {
  document.getElementById('mypic6').src=imgArray6[slide_num][0];
  document.getElementById('mypic6').alt=imgArray6[slide_num][1];
}

function slideshow6Up() {
  num6++;
  num6 = num6 % imgArray6.length;
  slideshow6(num6);
}

function slideshow6Back() {
  num6--;
  if (num6 < 0) {num3=imgArray6.length-1;}
  num6 = num6 % imgArray6.length;
  slideshow6(num6);
}