var member_nums = new Array(11);
member_nums[1] = 1;
member_nums[2] = 1;
member_nums[3] = 1;
member_nums[4] = 1;
member_nums[5] = 1;
member_nums[6] = 1;
member_nums[7] = 1;
member_nums[8] = 1;
member_nums[9] = 1;
member_nums[10] = 1;

function next_img(member) {
  if (member_nums[member]>=4) {
    member_nums[member] = 0;
  }
  member_nums[member]++;
  obj=document.getElementById('member_'+member);
  obj.innerHTML = "<a href='member_details.php?member="+member+"'><img src='member_images/map/m"+member+"p"+member_nums[member]+".jpg?" + Math.floor(Math.random()*1000) + "'></a>";
  obj2=document.getElementById('member'+member);
  obj2.innerHTML = member_nums[member]+"/4";
}

function prev_img(member) {
  if (member_nums[member]<=1) {
    member_nums[member] = 5;
  }
  member_nums[member]--;
  obj=document.getElementById('member_'+member);
  obj.innerHTML = "<a href='member_details.php?member="+member+"'><img src='member_images/map/m"+member+"p"+member_nums[member]+".jpg?" + Math.floor(Math.random()*1000) + "'></a>";
  obj2=document.getElementById('member'+member);
  obj2.innerHTML = member_nums[member]+"/4";
}