nrGallery uses dynamic thumbnails which maintains the aspect ratio and also fits to any width and height specified by the user. This aricle provides the PHP script used to create dynamic fixed dimension thumbnails which maintains the image's aspect ratio.
nrGallery is a simple PHP + JQuery photo gallery. nrGallery is a completely AJAX based image gallery, which is easily pluggable into any website with PHP support. nrGallery is easy to install as there is no need for setting up a database. Click on the Gallery arrow image on the left to see the nrGallery in action. nrGallery is released under the GPL license. So feel free to use and distribute it.
CSS Sprite is not a new concept. I decided against blogging on CSS Sprites. But, even today, I see big websites loading the button hover image when the user places the mouse over the button. That spoils the entire hover effect. Use CSS Sprites at least for end user experience, if not for performance.
Try loading http://navirudra.com and http://www.navirudra.com. They both look the same visually. But technically navirudra.com is the top level domain and www is a subdomain of navirudra.com. Both are the same as long as there are no AJAX calls in the site. This article analyses the AJAX usage with the www subdomain.
If you are a startup software company with a few employees, then setting up a separate Version Control (SCM) server (which is up 24x7) is a little too much of an ask. But the need to work across the clock on the project will be quite common in startups. The alternative is setting up a free online SVN repository. This article analyses the setting up of the free private online SVN for Small Businesses.
AJAX does not allow cross domain calls. Meaning: If you try to make a call from the document of http://navirudra.com to an api from http://facebook.com the call fails, citing security reasons. This is where JSONP comes to our rescue.
CSS Box Model specifies the way the elements are constructed using margin, border, padding and the actual content. But the greater question is What goes Where?