I've
added a new thing: a 'dimmer' option, to darken the rest of the page when you open a popup. If you use it you'll need to add some CSS to make it actually visible, something like this:
CSS code:
#quickslide-dimmer {
background-color: #333;
opacity: 0.8;
filter: alpha(opacity = 80);
box-shadow: 0 0 9em #000 inset;
}