Yesterday, I was keeping an eye on the bubbling cider and it was getting all nice and foamy and the airlock was bobbing away so I quit worrying about it. In the afternoon, however, I noticed it had jumped the bounds. The airlock was full of cider and the picture to the left is what it looked like after I took the airlock off. I put a towel over the top of the jug overnight and put the airlock on again this morning and it's behaving properly now. My pantry smells like a brewery though; good thing I don't consider that a bad thing. Yay yeast!