Hello, This is the exact same issue someone else had just the other day, and they were also a Joomla user. Your problem is figure out by selecting the menu li element using Firebug. The Superfish background rule is being overridden by the #pillmenu li li rule which is in the green.css file. The reason this rule gets precedence over the Superfish CSS is because it uses an id in the selector, which trumps the .sf-menu class selector.
Interestingly, 'pillmenu' was the exact same id that was involved with the other Joomla user's issue, so I assume it must be part of Joomla's templates. Solve your problem by adding the id to your Superfish selector in order to increase its 'specificity', like this: #pillmenu .sf-menu li { background: #BDD2FF url('../images/ normal_bg.png') repeat-x 0 0; } Joel Birch.