Friday, April 17, 2009


Whats CAPTCHA? Whenever you fill an online form you come across a small image which is very not easy to read and you have to recognize and type them in the form to successfully submit the form. This is actually a CAPTCHA. The wikipedia definition says captcha is a type of challenge-response test used in computing to ensure that the response is not generated by a computer. This is done mostly to prevent crackers to automatically run scripts to submit the online forms, thereby bring down the resources of the host. It is a kind od security service. Captchas are most common in email registration, blogs when you post comments, banking applications and other sigin features. But this is sometimes horrifying to many users because they have to recognise the text and enter them everytime. Also in some sites such as banking captchas are too difficult to read. Though they are hard to crack by text recogniton software, they frustrate the users. The user need to refresh to get another image. I have even seen images which has to be typed case sensitive and it becomes even more difficult. Arent there any other way to prevent these issues. Lets wait n watch.

Tuesday, April 14, 2009

Power of CSS

CSS stands for cascading stylesheets. In a normal web document the HTML gives structure to the web page, Javascripts adds behaviour and CSS gives the presentation. All the three are considered to be the tri-God of the web. All the 3 together gives a powerful and amazing user experience on the web. Here is an interesting page which has the same content but different presentations. Its an wonderful example how we can seperate data from presentation.

The following is the link to the site

Something I found interesting

I attended a web front end training programme recently. The trainer gave many interesting information about front end tools. During his speech he gave some interesting links. One of them was This site which is called wayback machine was interesting because it had the snapshot of all the websites in varying time frames. Out of curiosity I tried the Yahoo! homepage. I was surprised to see the page with just hyperlinks in the year 2000. Really web 2.0 has changed the internet a lot and is changing more rapidly than anything in this world.