Showing banner in multiday event in calendar

[kh99]

I think you said it yourself - easy question, no easy answer. I don't know much about the calendar, and I doubt if what you need is documented. But if I were going to try to do that I'd look at calendar.php to see how it generates the calendar display, and then figure out how to change it like you want. I know, that's really not a lot of help.