Author Archive for: Alan Seiden

Entries by Alan Seiden

Protect Your Eyes Against Computer Vision Syndrome (CVS)

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Eye strain is a common complaint from computer users, but eyes aren’t the only part of the body that can hurt. Neck pain and backaches can also result from poor visual ergonomics. In my latest article, Protect Your Eyes Against Computer Vision Syndrome (CVS) (requires free registration after about May 18, 2007), I show several ways to keep your eyes comfortable at the computer. People who wear bifocals or trifocals should consider occupational progressive lenses, glasses that are made especially for daily computer use. These special glasses can resolve painful postural problems. Money-saving tip: if you need to buy special…

Arrange Your Workstation to Protect Yourself Against Repetitive Strain Injury (RSI)

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If you’re reading this blog, you need to protect yourself against Repetitive Strain Injury (RSI). As we work and explore the internet, we accumulate little stresses and habits that can hurt us over time. MC Press just published my piece on how to arrange your computer workstation to avoid injury. For my research, I interviewed Steve Shostack, former ergonomics consultant to NASA, and Paul Linden, Ph.D. Paul, an aikido teacher and Feldenkrais practitioner, wrote Comfort at Your Computer. I also recommend Paul’s free e-book, Reach Out: Body Awareness Training for Peacemaking, downloadable from www.being-in-movement.com. Space did not permit me to…

PHP mail() on IBM System i

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My new article about mail() is available at MC Press Online. The article covers: Zend Core’s implementation of mail() for IBM System i How mail() compares to packages such as PHPMailer Function definition and example How to configure SMTP in Zend Core Overriding defaults with ini_set Troubleshooting (This article is no longer available.)

Site Upgraded to PHP 5

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Early this week I called my web hosting provider, BlueHost, to ask to be upgraded from PHP 4 to 5. They graciously offered to move my files to a PHP 5 server at no charge. I was warned, though, that my site might be inaccessible during the move. Later that day, I saw that the site was running on PHP 5. One problem: my custom MX records, pointing to the wonderful FastMail email host, were reset to their defaults. People who wrote to me the morning of October 3 had their email bounced back to them. BlueHost corrected my MX…

“Internet Options” Window Does Not Open

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When my friend reported that her Internet Explorer 6 browser crashed repeatedly, I suggested she delete temporary internet files by clicking Tools/Internet Options. She said, “Nothing happens when I click Tools/Internet Options.” Tools/Internet Options did not work. No window appeared. Other features, such as Edit/Find, also didn’t work, or didn’t work consistently. I could eventually make these windows appear by clicking various options over several minutes. I eventually discovered the pattern. No web page loaded: Tools/Internet Options & Edit/Find did not work. Any web page loaded: Tools/Internet Options & Edit/Find worked properly. My PC, which runs the same version of…

Javascript Debugger for FireFox: FireBug

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Powerful yet unobtrusive, FireBug, a FireFox Extension by Joe Hewitt, runs in a frame that pops up only when requested or when an error occurs. It helped me solve two javascript problems today. Thanks to Dell Sala, who told me about FireBug at Tuesday’s New York PHP meeting.

Welcome to alanseiden.com

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I plan to share all my writing here. My existing articles will appear first, followed by original content. Readers will find articles about about information technology, including topics such as IBM System i (AS/400, iSeries, i5), PHP, and usability. Personal-computing tips will also abound.