CrazyTB's blog

July 2009

( Monthly archive )

network

How Google/Firefox Geolocation API works

Thursday, 23. July 2009, 03:23:07

notebook, network

Today I found that Google Maps could find almost exactly where I am (missed by one block, about 100 meters). I was quite surprised and spooked by this feature, and wanted to understand how it works.

Currently, both Google Chrome (with Google Gears) and Mozilla Firefox 3.5 support geolocation API.

ubuntu

linux

Ubuntu + sysklogd + remote logging = slow

Tuesday, 21. July 2009, 23:01:32

I have a Ubuntu server 8.04 machine that used to have sysklogd configured to work as remote logging server. Some operations on that machine felt very slow, with ssh login taking too much time, as well as apache taking too long while delivering pages.

Fortunately, today I found the reason why it was slow, and how to "solve" it.

An then a Maxtor HD fails after 3 months of use

Sunday, 5. July 2009, 20:37:35

After 122 days and 7 hours of use, my Maxtor 500GB hard drive stopped working. I should have had a second hard disk as backup...

People, DON'T EVER TRUST ONLY ONE HARD DISK, please have multiple hard disks as backup, not only one!

Denilson Figueiredo de Sá

Blog search

Web (HTML/CSS/JavaScript/DOM)

HTML 4.01 Specification
Official W3C HTML 4.1 specs.
CSS 2.1 Specification
Official W3C CSS 2.1 specs.
www.HowToCreate.co.uk
Excellent site with lots of good tutorials about HTML, CSS, JavaScript and DOM. The author always try to make things cross-browser and standard compliant.
BrainJar.com
Nice site with nice DOM tutorials and already made scripts. However, some scripts are not really cross-browser. DOM tutorials are nice to beginners, though.
Ampersands, PHP Sessions and Valid HTML
Why using PHP sessions causes invalid HTML and XHTML to be generated, and how to fix it.
dean.edwards.name/IE7/
IE7 is a JavaScript library to make IE behave like a standards-compliant browser. It fixes many CSS issues and makes transparent PNG work correctly under IE5 and IE6.
Sending XHTML as text/html Considered Harmful
An excellent text that says you must not use XHTML if you do not understand it.
Client-Side JavaScript 1.3 Reference
Old documentation of JavaScript 1.3, previously available at Netscape site.
Document Object Model (DOM) Technical Reports
W3C DOM specification.
Supporting IE with conditional comments
Excellent article.
Is HTML5 ready yet?

My other pages

http://denilsonsa.selfip.org/~denilson/
My "official" page.

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