Apply User Stylesheet (CSS) rules on a site-by-site basis.
The URIid extension makes it possible to create CSS rules based on the site you are visiting. This is useful when specific sites do not render correctly or are simply not visually appealing.
The extension adds an id to the body of each page allowing the id selector to be used in your User Stylesheet (userContent.css) file.
The URI id extension allows you to use of page-/site-specific userContent.css.
Note: The URI id addon is cross-platform and it works on Mac OS X, Windows and Linux.
Requirements:
· Thunderbird: 0.5 to 1.0.2
What's New in This Release: [ read full changelog ]
· All new 'before page load' action.
Universal Binary 
