Given two abitrary HTML elements A and B in the same document, how can I find out which one is "closer" to the user (i.e. if they overlap, which one is obscuring the other)? The W3C CSS Specificat...

I have set up a script to create webshots of our app. It runs perfectly and all is fine Until I encounter an image with a broken url : "<img src='http://testserver.our.intranet/fetch/image/37...

The ZF2 docu describes Creating and Registering Alternate Rendering and Response Strategies. I've read that, but I don't really understand, how to use a strategy. I have an application, that shoul...

Before displaying the items from a collection, meteor seems to do some processing that leaves the client window without updates. You can see this live if you surf to http://madewith.meteor.com on a...

Can anyone explain me why those spaces (marked with ?) are there? They are delaying the page loading. I thought it could be the page/script parsing time, but ~350ms looks too much for a simple page...

I have seen people discussing the same Javascript getting loaded multiple times, creating problems as the code runs every time on every include. I am including the same CSS file multiple times in ...

For the sake of this question, let "efficiency" mean, more-or-less, page rendering speed. Albeit, we should also take into account performance issues, like smooth scrolling. Let's say you're...

I'm having display issues in IE7 due to it rendering in quirks mode. I've confirmed this by displaying "document.compatMode" and getting back "BackCompat" as opposed to "CSS1Compat". Using IE8 and ...