You can create multiple windows in a Navigator JavaScript application. Frame objects have the same properties and methods as window objects and differ only in the way they are displayed. Displays an Alert dialog box with a message. Displays a Confirm dialog box with OK and Cancel buttons. Displays a Prompt dialog box with a text field for entering a value.
Removes focus from, or gives focus to a window.
Scrolls a window to a specified coordinate. Evaluates an expression after the specified time. Because its write and writeln methods generate HTML, the document object is one of the most useful Navigator objects. A page has only one document object. Other useful document properties include lastModified , the date the document was last modified, referrer , the previous URL the client visited, and URL , the URL of the document.