var num7=0;

imgArray7 = [
  ['http://movermoms.org/programs/bookclub/previous/book7/photo_01.jpg','photo 1 mouseover text'],
  ['http://movermoms.org/programs/bookclub/previous/book7/photo_02.jpg','photo 2 mouseover text'],
  ['http://movermoms.org/programs/bookclub/previous/book7/photo_03.jpg','photo 3 mouseover text'],
  ['http://movermoms.org/programs/bookclub/previous/book7/photo_04.jpg','photo 4 mouseover text']
  ]
function slideshow7(slide_num) {
  document.getElementById('mypic7').src=imgArray7[slide_num][0];
  document.getElementById('mypic7').alt=imgArray7[slide_num][1];
}

function slideshow7Up() {
  num7++;
  num7 = num7 % imgArray7.length;
  slideshow7(num7);
}

function slideshow7Back() {
  num7--;
  if (num7 < 0) {num3=imgArray7.length-1;}
  num7 = num7 % imgArray7.length;
  slideshow7(num7);
}