parent.appendChild(addTerrainTile(1, "terrain.sea.png", null, "80a0e0"));
parent.appendChild(addTerrainTile(2, "terrain.plains.png", null, "d0f0a0"));
parent.appendChild(addTerrainTile(3, "terrain.hills.inner.png", "terrain.hills.outer.png", "604020"));
parent.appendChild(addTerrainTile(4, "terrain.mountains.inner.png", "terrain.mountains.outer.png", "909090"));
parent.appendChild(addTerrainTile(5, "terrain.tundra.inner.png", "terrain.tundra.outer.png", "c0c0c0"));
parent.appendChild(addTerrainTile(6, "terrain.swamp.inner.png", "terrain.swamp.outer.png", "309030"));
parent.appendChild(addTerrainTile(7, "terrain.desert.inner.png", "terrain.desert.outer.png", "c0c0a0"));
return parent;
}
/**