var scroll_size = 0;
function onScrollLeft() {
  if (scroll_size >= 0) { 
    scroll_size = -3;
    onScrollStart();
  }
}
function onScrollRight() {
  if (scroll_size <= 0) { 
    scroll_size = 3;
    onScrollStart();
  }
}
function onScrollStop() {
  scroll_size = 0;
}
function onScrollStart() {
  var div = document.getElementById('slideshow-images');
  if (! div) return false;
  div.scrollLeft += scroll_size;
  if (scroll_size != 0 && div.scrollLeft > 0 ) {        
    setTimeout("onScrollStart()",30);
  } 
  return false;
}
function activateSlideshow() {
  var arr = Array('slideshow');
  for( m = 0; m < arr.length; m++ ) {
    var div = document.getElementById( arr[m] );
    if (! div) continue;
    var a = div.getElementsByTagName('A');
    for ( var i=0; i<a.length; i++ ) {
      if (a[i].id == 'scroll2left') {
        a[i].onmouseover = onScrollLeft;
        a[i].onmouseout = onScrollStop;
      } 
      if (a[i].id == 'scroll2right') {
        a[i].onmouseover = onScrollRight;
        a[i].onmouseout = onScrollStop;
      }
    }
  }
}

window.onload = function() {
  activateSlideshow();
}