function change_text(id, text)
{
	var space = document.getElementById(id);
	space.innerHTML = text;
}



function initImage(step) {

	if (visible_index == photo_array.length)
	{
		visible_index = 0;
	}
	else if (visible_index < 0)
	{
		visible_index= photo_array.length - 1;
	}

	var tmp = image_array[visible_index];

	if (! tmp.complete)
	{
		alert ('chill -- the image is loading');
	}

  imageId = 'thephoto';
  image = document.getElementById(imageId);
    
  image.style.visibility = 'visible';
  
  image.src = photo_array[visible_index];
  
  if (tmp.width > 450)
  {
  	image.width = 450;
  	document.getElementById('zoom_control').style.visibility = 'visible';
  }
  else
  {
  	image.width = tmp.width;
  	document.getElementById('zoom_control').style.visibility = 'hidden';
  }
  
  fadeIn(imageId,0);

	change_text("photo_headline", headline_array[visible_index]);
	change_text("photo_caption", caption_array[visible_index]);
}



function setOpacity(obj, opacity) {
  opacity = (opacity == 100)?99.999:opacity;
  
  // IE/Win
  obj.style.filter = "alpha(opacity:"+opacity+")";
  
  // Safari<1.2, Konqueror
  obj.style.KHTMLOpacity = opacity/100;
  
  // Older Mozilla and Firefox
  obj.style.MozOpacity = opacity/100;
  
  // Safari 1.2, newer Firefox and Mozilla, CSS3
  obj.style.opacity = opacity/100;
}

function fadeIn(objId,opacity) {
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity <= 100) {
      setOpacity(obj, opacity);
      opacity += 10;
      window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 100);
    }
  }
}

function zoom(index)
{
	if (zoom_window)
	{
		zoom_window.close();
	}
	
	var tmp = image_array[visible_index];
	zoom_window = window.open(tmp.src,'moosefish_photo',"width=" + tmp.width + ",height=" + tmp.height + ",innerwidth=" + tmp.width + ",innerheight=" + tmp.height + ",location=no,resizable=yes,status=no,menubar=no,scrollbars=no,toolbar=no");
}