I really want to make use of multiple background support (Webkit, Firefox 3.6+), but I would like to provide an alternative solution for browsers that don’t support it. (IE, Firefox 3.5-).
Is there any way to detect support for this CSS feature? Or will I have to resort to browser sniffing?
EDIT: Javascript solutions are welcome
Use http://www.modernizr.com/. This is a piece of javascript that will set up classes depending on what features the browser have. You can then use these classes in CSS.