Once upon a time, there was a frog . . . and there was a toad . . . and they were friends. Frog always saw the best in people and situations. He was a laid-back, cheerful, "cup is half-full" fella. Toad always seemed to find himself in a mishap. And being a high-strung, "cup is half-empty" fella, he responded to his mishaps in a dejected sort of way. Sometimes Toad gave in to the grumpies. But no matter what, "Frog and Toad always helped each other out -- as good friends should." Arnold…