var num10=0;

imgArray10 = [
  ['http://movermoms.org/programs/bookclub/previous/book10/photo_01.jpg','photo 1 mouseover text'],
  ['http://movermoms.org/programs/bookclub/previous/book10/photo_02.jpg','photo 2 mouseover text'],
  ['http://movermoms.org/programs/bookclub/previous/book10/photo_03.jpg','photo 3 mouseover text'],
  ['http://movermoms.org/programs/bookclub/previous/book10/photo_04.jpg','photo 4 mouseover text']
  ]
function slideshow10(slide_num) {
  document.getElementById('mypic10').src=imgArray10[slide_num][0];
  document.getElementById('mypic10').alt=imgArray10[slide_num][1];
}

function slideshow10Up() {
  num10++;
  num10 = num10 % imgArray10.length;
  slideshow10(num10);
}

function slideshow10Back() {
  num10--;
  if (num10 < 0) {num3=imgArray10.length-1;}
  num10 = num10 % imgArray10.length;
  slideshow10(num10);
}