Changing scenes without a new script?

Is there a way to to change the scene without having to write a new script for each one? When you change scene you would normally use

Application.LoadLevel("levelname")

However, this requires you to change the script for each and every level. Let’s say you wanted to have 50 levels, and you wanted to go through them one-by-one, never going back to a previous level. Is there a way you could make an order for them, and say once you complete a level, go to the next one in the list?

Thanks!

How about

Application.LoadLevel(Application.loadedLevel + 1);

Just load by index, not name.