I am in a bit of a muddle. I have a zoom in and a zoom out button. If the user clicks zoom in I want the browser to respond to on click functions defined in a js file I have made called zoom in, if they click on zoom out, I want the browser to respond to click events etc as defined in my zoom out js file. Does this make sense, is this the most logical way for it to work? And how would one go about doing this? Any help much appreciated.