This plugin makes it easy to create a simple, modifiable popup window.
Added class 'simple_popup_link' to links for styling and fixed some bugs.
Added shortcode attributes for changing the dimensions of each popup window as needed. Also added the attribute 'class' to the shortcode for adding a custom class to the link if desired.
Some code fixes and cleanup to ensure compatibility with new WordPress versions.
Fixed issue of toolbar/scrollbar/location bar options not working correctly.