Hi all, This seems like much more of a general web development question, but given the sandbox I'm playing in, I haven't seen a solution to this yet that I think works in roll20. I am 99% sure that someone has already solved it here, but I haven't been able to find word of it. Anyway: I have a drop-down select element. As its selected value changes, I need a second drop-down select element's options to change dynamically (or just hide inapplicable ones) and by default select the first of those options. I know from searching that this is probably a two-step process (the altering of the DOM or fiddling with the CSS and then the changing of the actual attribute the second select represents); the second step I'm fine with, the first has me out of my depth. Any help is appreciated, and thanks!