Do protocol relative urls work cross-platform?

I often use the // relative URI hack. Example:Mostly because of this post: Is it valid to replace http:// with // in a ?.However, a guy I am working with on a project says this doesn’t work on Mac...

Nested loops and SQL queries; need for speed

I’m having trouble solving a problem with iterative SQL queries (which I need to do away with) and I’m trying to work out an alternative.(Also; unfortunately, AJAX is not really suitable)Given...