Firefox AddOn "Open URL with variable in new tab"

Hi, I need a FireFox AddOn. It shall take the URL of the current browser tab/window and add it to a specific URL which is then opened in a new tab. Example: I am viewing http://www.wikipedia.org. I want to open the site [login to view URL] and add the currently viewed url ([login to view URL]) to it. So onclick the addon opens a new tab with this url: [login to view URL]://[login to view URL] That's everything :) You can use the official Addon Builder: [login to view URL] I need you to send me the source code of this addon as an xpi file. Thank you, mamoti