function keyPressHandler(e) {
	if (e.keyCode == 27)
	{
		if (dojo.byId('background_element') != null)
			dojo.byId('background_element').style.display = 'none';
	}

	if ((typeof(photos) != "undefined") && (typeof(photo_index) != "undefined") && (photos != []))
	{
		if (e.keyCode == 37)
		{
			if (photo_index > 0)
			{
				photo_index--;
				SetImage(photo_index);
			}
		}
		if (e.keyCode == 39)
		{
			if (photo_index < (photos.length - 1))
			{
				photo_index++;
				SetImage(photo_index);
			}
		}
	}

	if ((typeof(chronicle_photo_view) != "undefined") && chronicle_photo_view && (typeof(chronicle_actual_photos) != "undefined") && (typeof(chronicle_photo_index) != "undefined") && (chronicle_actual_photos != []))
	{
		if (e.keyCode == 37)
		{
			if (chronicle_photo_index > 0)
			{
				chronicle_photo_index--;
				chroniclePhotoSet(-1, true);
			}
		}
		if (e.keyCode == 39)
		{
			if (chronicle_photo_index < (chronicle_actual_photos.length - 1))
			{
				chronicle_photo_index++;
				chroniclePhotoSet(1, true);
			}
		}
	}

}