I wanted to post today

I even had an entry all typed up with pictures and everything ready to go. My Blogger has been going crazy lately though.
Anytime I save an entry, then go back into it, it goes nuts. Everywhere I move my mouse in the text body it moves everything around. The formatting and my pictures and even some lines of text will just move wherever I put my mouse and there's no way to say where they'll end up, or where they want to stay.
Has anyone else ever experienced this? Or know how to fix it? I'm literally about to go crazy, and it's really quite frustrating.
Anyway, there won't be much coming from me if this keeps up, at least must that will make any sense to anyone {including me}.