document Object

• We've used this as well.  document.write("Hello World!")
• A child of window, so you can also use window.document.write().  Optional for one browser, but a must with multiple browser windows.
• document properties:
• document.URL  Read-only property holding the current URL.
• document.title The title of the current page.
• document.referrer URL of the previous page.  Where can we use this in a business application?
• document.lastModified Date the document was last modified.