Setting a dHTML element’s behavior attribute allows you to customize the element.
Microsoft implemented the behavior attribute of Cascading Style Sheets in a way that enabled object-oriented programming to enter the world of web authoring. By encapsulating dHTML in an external object, the properties and methods of that object can be used. A web page can then use these objects with the behavior attribute. This means, for example, that a web author no longer had to perform an explicit browser detection.
Microsoft’s component object model allows programmers to create objects (programs) that can run from any Windows desktop environment.
The basic architecture of the model defines the interfaces of the objects and different ways that they can be executed. COM allows objects to be created in almost any programming language and affords the programmer the ability to incorporate a set of third-party controls such as OLE and ActiveX. The COM+ standard introduced improvements to the original model.
While COM hasn’t been deprecated, many of its functions have been integrated into the .NET effort.
A digital subscriber line, or DSL, is a communications technology that allows data to travel at very high speeds over standard telephone wire without interrupting normal telephone service.
The primary market for DSL is the home office since the technology makes it easy for residential homes to receive high-speed internet access at a reasonable price. DSL speeds, on the average, run at about 600kbps for downstream and 128kbps for upstream.
Much like standing behind your co-worker while she slaves away, hover implies standing by but not doing anything. In dHTML, it refers specifically to when the user has positioned her cursor over a link but not yet clicked anything. The style will not change if the cursor is simply passed over the link, but you can set an action to take place after a predetermined amount of hovering.