There is a JavaScript Library available for free. This library can provide you world class GUI Interface.
The Yahoo! User Interface (YUI) Library is a set of utilities and controls, written in JavaScript, for building richly interactive web applications using techniques such as DOM scripting, DHTML and AJAX. The YUI Library also includes several core CSS resources. All components in the YUI Library have been released as open source under a BSD license and are free for all uses.
I come accross ExtJS web 2.0 library to create Rich Internet Application (RIA) , and I am highly impressed with this library.
About ExtJS : It is a cross-browser java-script library that allows for building the Rich Internet Applications (RIA). Offical Website : extjs.com It includes:
* High performance, customizable UI widgets * Well designed and extensible Component model * An intuitive, easy to use API * Commercial and Open Source licenses available
Ext uses the latest web 2.0 methods, such as Ajax, which has built in parsers for XML (Extensible Markup Language), JSON (JavaScript Object Notation), Text and few other formats. Using ExtJS user can create desktop looking interfaces with just som simple notation(ExtJS is probably not the first project to do this)...this in my opinion is one of the greatest things ExtJS has to offer. The simple notation way of creating these interfaces allows for rapid deployment of interfaces, and takes the GUI (Graphical User Interface) creation out of the hands of the developer, and allows the developer to focus on getting the data to the front end.
ExtJS recently release of Ext 2.2 version and it supports all the major web browser (Internet Explorer 6+, FireFox 1.5+, Safari 3+, Opera 9+)
Currently Ext documentation is not very good but the community is very active. In my opinion the Ext documentation could take a lesson from the PHP documentation and add common examples in this notation style format, for the various things you may want to do with an object/widget/datastore.
Conclusion: ExtJS is very good product with a bright future and just needs to improve its documentation as well as it has its interface objects.
