/*
JavaScript Bible, Fourth Edition
by Danny Goodman
Publisher: John Wiley & Sons CopyRight 2001
ISBN: 0764533428
*/
MAP Element Object
// generate area elements on the fly
function makeAreas() {
document.myIMG.src = "desk3.gif"
// build area element objects
var area1 = document.createElement("AREA")
area1.href = "http://www.rntsoft.com"
area1.shape = "polygon"
area1.coords = "52,28,108,35,119,29,119,8,63,0,52,28"
var area2 = document.createElement("AREA")
area2.href = "http://www.rntsoft.com"
area2.shape = "rect"
area2.coords = "75,65,117,87"
var area3 = document.createElement("AREA")
area3.href = "http://www.rntsoft.com"
area3.shape = "polygon"
area3.coords = "68,51,73,51,69,32,68,51"
var area4 = document.createElement("AREA")
area4.href = "http://www.rntsoft.com"
area4.shape = "rect"
area4.coords = "0,0,50,120"
// stuff new elements into MAP child nodes
if (document.all) {
// works for IE4+
document.all.lampMap.areas.length = 0
document.all.lampMap.areas[0] = area1
document.all.lampMap.areas[1] = area2
document.all.lampMap.areas[2] = area3
document.all.lampMap.areas[3] = area4
} else if (document.getElementById) {
// NN6 adheres to node model
var mapObj = document.getElementById("lamp_map")
while (mapObj.childNodes.length) {
mapObj.removeChild(mapObj.firstChild)
}
mapObj.appendChild(area1)
mapObj.appendChild(area2)
mapObj.appendChild(area3)
mapObj.appendChild(area4)
// workaround NN6 display bug
document.myIMG.style.display = "inline"
}
function changeToKeyboard() {
document.myIMG.src = "cpu2.gif"
document.myIMG.useMap = "#keyboardMap"
}
function changeToLamp() {
document.myIMG.src = "desk3.gif"
document.myIMG.useMap = "#lampMap"
}
MAP Element Object