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/*
JavaScript Bible, Fourth Edition
by Danny Goodman
John Wiley & Sons CopyRight 2001
*/
<HTML>
<HEAD>
<TITLE>Window Gymnastics</TITLE>
<SCRIPT LANGUAGE="JavaScript1.2">
var isNav4 = ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4))
// wait in onLoad for page to load and settle in IE
function init() {
// fill missing IE properties
if (!window.outerWidth) {
window.outerWidth = document.body.clientWidth
window.outerHeight = document.body.clientHeight + 30
}
// fill missing IE4 properties
if (!screen.availWidth) {
screen.availWidth = 640
screen.availHeight = 480
}
}
// function to run when window captures a click event
function moveOffScreen() {
// branch for NN security
if (isNav4) {
netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserWrite")
}
var maxX = screen.width
var maxY = screen.height
window.moveTo(maxX+1, maxY+1)
setTimeout("window.moveTo(0,0)",500)
if (isNav4) {
netscape.security.PrivilegeManager.disablePrivilege("UniversalBrowserWrite")
}
}
// moves window in a circular motion
function revolve() {
var winX = (screen.availWidth - window.outerWidth) / 2
var winY = 50
window.resizeTo(400,300)
window.moveTo(winX, winY)
for (var i = 1; i < 36; i++) {
winX += Math.cos(i * (Math.PI/18)) * 5
winY += Math.sin(i * (Math.PI/18)) * 5
window.moveTo(winX, winY)
}
}
// moves window in a horizontal zig-zag pattern
function zigzag() {
window.resizeTo(400,300)
window.moveTo(0,80)
var incrementX = 2
var incrementY = 2
var floor = screen.availHeight - window.outerHeight
var rightEdge = screen.availWidth - window.outerWidth
for (var i = 0; i < rightEdge; i += 2) {
window.moveBy(incrementX, incrementY)
if (i%60 == 0) {
incrementY = -incrementY
}
}
}
// resizes window to occupy all available screen real estate
function maximize() {
window.moveTo(0,0)
window.resizeTo(screen.availWidth, screen.availHeight)
}
</SCRIPT>
</HEAD>
<BODY onLoad="init()">
<FORM NAME="buttons">
<B>Window Gymnastics</B><P>
<UL>
<LI><INPUT NAME="offscreen" TYPE="button" VALUE="Disappear a Second" onClick="moveOffScreen()">
<LI><INPUT NAME="circles" TYPE="button" VALUE="Circular Motion" onClick="revolve()">
<LI><INPUT NAME="bouncer" TYPE="button" VALUE="Zig Zag" onClick="zigzag()">
<LI><INPUT NAME="expander" TYPE="button" VALUE="Maximize" onClick="maximize()">
</UL>
</FORM>
</BODY>
</HTML>
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