var showVergroting = false;
var timeVergroting;
function showImage(current_id) {
  image_id = myImages[current_id];
  myImageCurrent = current_id;
  document.getElementById('media_vergroting_img').src = '/viewdbimg.asp?id='+image_id+'&maxbreedte=390&maxhoogte=292';
  if (showVergroting == false) {
    timeVergroting = setTimeout('scrollVergroting()', 100);
  }
}
function scrollVergroting() {
  var media_vergroting = document.getElementById('media_vergroting');
  media_vergroting_height = parseInt(media_vergroting.style.height.replace('px',''));
  if (media_vergroting_height >= 320) {
    clearTimeout(timeVergroting);
  } else {
    media_vergroting.style.height = (media_vergroting_height + 8) + 'px';
    timeVergroting = setTimeout('scrollVergroting()', 1);
  }
}
function hideImage() {
  var media_vergroting = document.getElementById('media_vergroting');
  media_vergroting_height = parseInt(media_vergroting.style.height.replace('px',''));
  if (media_vergroting_height < 8) {
    clearTimeout(timeVergroting);
  } else {
    media_vergroting.style.height = (media_vergroting_height - 8) + 'px';
    timeVergroting = setTimeout('hideImage()', 1);
  }
}
var myImageCurrent = 0;
var myImages = new Array();

function showPrev() {
  if ((myImageCurrent-1) > -1) {
    showImage(myImageCurrent-1);
  }
}
function showNext() {
  if ((myImageCurrent+1) < myImages.length) {
    showImage(myImageCurrent+1);
  }
}
function showDownload() {
  window.open('/viewdbimg.asp?id='+myImages[myImageCurrent]);
}