Window classes are the essential part of the library. They provide cross-browser implementation of the containers of other QLIB and user-defined objects. They embrace many browser-specific features, including transitions and static effects (like shadow casting). Although any QLIB object (as a button for example) can live without a window, nearly each real-production application takes advantage of the windowing.

	Generic windows are basically the most flexible containers. Use them to create custom popup windows, menus, control panels or tabs.
	The box simplifies creating windows of any shape. Tell which graphics you want to use for the border and let the box to do the rest. Additionally the box can cast realistic shadow or even appear with animation. The content of the box is up to you.
	Forget those browser ugly alerts, use QMessageBox instead.

Use the objects below to build up the appearance of your site. You can either put these objects on a window or panel, or simply use them on your web page.

	See various graphic buttons and custom checkboxes in action in this example. Learn what's a web-button here.
	Need an active digital counter for your web page? This component supports various scrolling modes.
	There's no analog of a progress bar in HTML. But still no one came up with better way to track lasting actions such as downloading. QProgress is a customizable and optimized for speed progress indicator.
	Change the text dynamically using cross-browser QLabel object. It's an usual thing in case of a DOM2 compatible browser. But how you guess I have this working on Netscape 4.7?
	Flying balloons, shaking pieces in the mixup puzzle. These are the use cases of QSprite object. Learn how it can help in games writing.
	Let your visitors not only see the beautiful page you created but hear it. Guess what's worth having a preloaded sound on your page? As less as a single line of the js-code.