Quote Originally Posted by Eiskalteschatten
「どうもありがとう」はいつもひらがなで書かれる。「度」は英語で「degrees」と言いて、「画」は英 語で「picture」と言う。

"どうもありがとう" is always written in hiragana. "度" means "degrees" in English and "画" means "picture" in English.
Not always... you could write ありがとう or 有り難う or 有難う