JavaScript Examples Bible - UserWorks Technologies

134
JavaScript Examples Bible: The Essential Companion to JavaScript Bible
directories
locationbar
menubar
personalbar
scrollbars
statusbar
toolbar
windowObject.directories
NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5
Compatibility ✓ ✓
Example
In Listing 16-6, you can experiment with the look of a browser window with any
of the chrome elements turned on and off. To run this script, you must either sign
the scripts or turn on codebase principals (see Chapter 46 of the JavaScript Bible).
Java must also be enabled to use the signed script statements.
As the page loads, it stores the current state of each chrome element. One button
for each chrome element triggers the toggleBar() function. This function
inverts the visible property for the chrome object passed as a parameter to the
function. Finally, the Restore button returns visibility to their original settings.
Notice that the restore() function is also called by the onUnload event handler
for the document. Also, if you load this example into NN6, non-fatal script errors
occur when the scrollbars are turned on or off.
Listing 16-6: Controlling Window Chrome
Bars Bars Bars
// store original outer dimensions as page loads
var originalLocationbar = window.locationbar.visible
var originalMenubar = window.menubar.visible
var originalPersonalbar = window.personalbar.visible
var originalScrollbars = window.scrollbars.visible
var originalStatusbar = window.statusbar.visible
var originalToolbar = window.toolbar.visible
// generic function to set inner dimensions
function toggleBar(bar) {
netscape.security.PrivilegeManager.enablePrivilege(“UniversalBrowserWrite”)
bar.visible = !bar.visible
netscape.security.PrivilegeManager.revertPrivilege(“UniversalBrowserWrite”)
}