Question

I have a div with scrollbars. How can I detect if someone mousedowns on the scrollbar?

Answer 1

You can use the jQuery scroll function .scroll() and pass it a function to be called when scrolling occurs. See here for more info.

Example:

$('#targetdiv').scroll(function(event) {
  //Stuff to do when scrolled
});

You then might be able to use the event data to see if a mouse button is pressed.