Archive for the ‘Coding’ Category

Simple Physics

Sunday, July 29th, 2007

Posted at by Henry Woodbury on June 30, 2007 at 12:12 pm   

A simple, interactive Flash application at offers a mesmerizing glimpse into classical mechanics. By adjusting the location of two “planets” and the location and angle of two planes you can send a cascade of bouncy balls flying into space — or into orbit.

It’s like the spare, algorithmic, interactive version of this.

World Wide Web Consortium Issues RDF and OWL Recommendations

Wednesday, May 30th, 2007

Semantic Web emerges as commercial-grade infrastructure for sharing data on the Web

10 February 2004 — Today, the World Wide Web Consortium announced final approval of two key Semantic Web technologies, the revised Resource Description Framework (RDF) and the Web Ontology Language (OWL). RDF and OWL are Semantic Web standards that provide a framework for asset management, enterprise integration and the sharing and reuse of data on the Web. These standard formats for data sharing span application, enterprise, and community boundaries – all of these different types of “user” can share the same information, even if they don’t share the same software.

Today’s announcement marks the emergence of the Semantic Web as a broad-based, commercial-grade platform for data on the Web. The deployment of these standards in commercial products and services signals the transition of Semantic Web technology from what was largely a research and advanced development project over the last five years, to more practical technology deployed in mass market tools that enables more flexible access to structured data on the Web. Testimonials from enterprise-scale implementors and independent developers illustrate current uses of these standards on the Web today.

“RDF and OWL make a strong foundation for Semantic Web applications,” said Tim Berners-Lee, W3C Director and inventor of the World Wide Web. “Their approval as W3C Recommendations come at a time when new products spring up in areas as diverse as Enterprise Integration and medical decision support. It’s not unlike the early days of the Web, when once people saw how it worked, they understood its power. We’re entering that phase now, where people can see the beginnings of the Semantic Web at work.”

A World Wide Web Consortium (W3C) Recommendation is understood by industry and the Web community at large as a Web standard. Each Recommendation is a stable specification developed by a W3C Working Group and reviewed by the W3C Membership. Recommendations promote interoperability of Web technologies of the Web by explicitly conveying the industry consensus formed by the Working Group.


Semantic Web

Wednesday, May 30th, 2007

The Semantic Web provides a common framework that allows data to be shared and reused across application, enterprise, and community boundaries. It is a collaborative effort led by W3C with participation from a large number of researchers and industrial partners. It is based on the Resource Description Framework (RDF). See also the separate FAQ for further information.

Transparent custom corners and borders, version 2

Thursday, April 19th, 2007

Thanks to Roger Johansson at for this:

It’s been almost a year and a half since I posted Transparent custom corners and borders, a technique for creating custom corners and borders with optional alpha transparency. The technique is based on a combination of CSS and JavaScript, and gives you a lot of flexibility when creating rounded corners or special borders.


Choosing an Accessible CMS

Thursday, April 19th, 2007

Author: Joshue O Connor  Senior Accessibility Consultant CFIT 

How do you go about choosing an accessible content management system (CMS)? What are the main criteria for success? And how to ensure ease of use for authors including screen reader users?

The Centre for Inclusive Technology  (CFIT), which is based in the headquarters of the National Council for the Blind of Ireland  (NCBI), looked at several popular CMSs in order to assess which would be most suitable.

Our approach was to look at how these CMSs work out of the box and no complex heuristics were applied in order to simulate how many other users would approach the adoption of a CMS in the real world. The assessment method was an intuitive approach with some basic core tasks such as adding content and administration.

Expert Screen Reader Evaluation by Paul Traynor  CFIT.


Avoid 404

Thursday, April 19th, 2007

Another appropriate title for this post could be “fix it before you break it”. Although a proper written 404 page can help you out it is better if you redirect a user to a new location (301) or return him a page that says that the page did exist, but will never return (410). The problem is that a lot of web companies start completely over when building a new web site and do not really look at the existing site. The result is that once a new site has been released, the old links are rendered outdated and now return a 404.


Accessible “read more” links

Thursday, April 19th, 2007

Thanks to

Russ Weakley’s Simple, accessible “more” links explains how you can use CSS to make “read more” links more accessible to screen reader users. Florian Grell has extended the technique to display the hidden information when the user is hovering over the link – check out Simple, accessible “more” links – v2 for more information on that.

These techniques are useful for linking to full articles from a list of headings and article excerpts when your client or someone on your team insists on having “Read more” links instead of linking the heading. This way the links will actually provide some information on where they lead.

Print stylesheet – the definitive guide

Monday, April 2nd, 2007

A print stylesheet formats a web page so when printed, it automatically prints in a user-friendly format. Print stylesheets have been around for a number of years and have been written about a lot. Yet so few websites implement them, meaning we’re left with web pages that frustratingly don’t properly print on to paper.


Jeffrey Zeldman On Why To Incorporate Web Standards

Sunday, March 25th, 2007

Article by Jeffrey Zeldman.

Web standards hold the key to accessible, cost-effective web design and development, but you wouldn’t know it from surveying most big commercial sites. In this chapter, CSS guru Jeffrey Zeldman explores some of the reasons web standards have not yet been incorporated into the normative practice of all design shops and in-house web divisions, and are not yet obligatory components of every site plan or request for proposal. If you need help selling standards to your colleagues, this chapter is for you.


Markup as a Craft

Sunday, March 25th, 2007

Article by Garrett Dimon

Markup is the technical foundation of front-end code. In one way or another, it influences or is influenced by design, content, accessibility, CSS, DOM scripting, and more. The quality of your markup will affect the quality of related code, and even the cost of implementing or maintaining that code. Your markup might be good now, but following the guidelines in this article will help bring it to the next