Sticky Notification Bar is a cool concept of showing a cool bar on top when the user scrolls down your page so that he come back to stop or use the na
Then just create a new Google map popup or edit the existing one. http://wpfruits.com/wp-content/uploads/2013/04/.png
Click on edit and add the options to for the Sticky Notification Bar you have created and get going.
Read more about the plugin at http://www.wpfruits.com/downloads/wp-plugins/sticky-notification-bar-for-wordpress/?ref=wp