However, if you specify any features in the third parameter, just those features will appear. The way to specify that you'd like your window to have certain features is to list them as a comma-separated list.

For example, if you write ...

window.open
("some_url","window_name","location,menubar");

... you'll get a window with just the location box (the place in your browser where you type in a URL) and a menu bar (File, Edit, etc.). Note: that these code samples may wrap to fit here in your browser, but they should be all on one line, no spaces, when you actually use them.

Here's another example:

window.open("some_url","window_name",
"location,height=100,width=100");

This will open a window that is 100 pixels high and 100 pixels wide and has no features other than a location field. Notice again that there are no spaces in the string.

If you'd like to open a window that has almost all the features, you can specify which features you don't want by setting those features equal to no. For example:

window.open("some_url","window_name",
"location=no,status=no");

This will open a window that has all the features except the location field and the status bar. Here's a list of the features that you can include in the feature string:

menubar

This is the row of functions that appears on most software applications. Normally it includes File, Edit, and a few other items.

status

This is the message bar at the bottom of your window. When you move your mouse over an HTML link, the URL appears in the status bar. You may have seen pages that use JavaScript to turn this status bar into a scrolling marquee. I'm not going to show you how to do this. If you want to know, you have to figure it out yourself. "Down with marquees," the monkey cried!

scrollbars

This allows scrollbars to appear when necessary.

resizable

If resizable is listed, the window can be resized. Be careful of the spelling. I always get it wrong.

width

The width of the window in pixels.

height

The height of the window in pixels.

toolbar

The browser toolbar, which contains the Back and Forward buttons, the Stop button, and the Home button, among others.

location

The text area of a browser into which you can type URLs.

directories

The directories that Netscape browsers have called "What's new," "What's cool," and so on.

Here are some examples of different types of windows.

Once you've checked out the examples, and maybe tried bringing up some windows of your own, it's time to learn how to mess with the contents of the windows.