Ah yes, the good ol' PNG transparency hack is included in there. The bitter-sweet memories of web development in the 90s. Too bad the only working hack for fixing PNG gamma was to remove the gamma chunk from the image file itself.
It’s very non-standard, it was IE only until they dropped it in IE8, but it was one of the features being abused to make up for other css features that IE6 or 7 lacked.
Sure, but my point still stands: figuring this out doesn't require arcane knowledge, contrary to what was suggested. The code inside the expression looks like standard JS. The downvotes and your reply suggests I should have communicated more clearly.
Web development became too easy after <!doctype HTML>. Gotta come up with ways to add complexity now. Quickly rewrite everything using latest web framework and no-SQL.
I once figured out that IE7 can be tricked into understanding the :before and :after CSS pseudo-elements with this: