I guess I didn't fully answer your question about calling a particular function. I was just showing a way to figure out what the current panel is. Once you know that, you can run whatever logic.   For example, you could figure out what function to call using a bunch of if/else statements or a switch, but that could get messy if you have a lot of panels. Another way would be to call a function directly. Here's an example of how you could get the name of a function to call by using a data attrib