The Web 2.0 movement got into full swing as developers everywhere learned that users were human and desired ergonomic, friendly interfaces. You will find in this chapter ideas on:
The HTML DOM is a tree of tags. The root of the tree is the
<html></html> tag itself. All tags within this tree belong to it; furthermore, tags within those tags belong to those tags.
We are all comfortable with viewing the source of an HTML document. Please note that any changes to the HTML after a page loads will not be apparent when viewing the source.