/*
JavaScript Bible, Fourth Edition
by Danny Goodman
John Wiley & Sons CopyRight 2001
*/
getClientRects() and getBoundClientRect() Methods
function hilite() {
var hTop, hLeft, hRight, hBottom, hWidth
var select = document.forms[0].choice
var n = parseInt(select.options[select.selectedIndex].value) - 1
var clientRects = document.all.main.getClientRects()
var mainElem = document.all.main
if (n >= 0 && n < clientRects.length) {
if (document.forms[0].fullWidth.checked) {
hLeft = mainElem.getBoundingClientRect().left
hRight = mainElem.getBoundingClientRect().right
} else {
hLeft = clientRects[n].left
hRight = clientRects[n].right
}
document.all.hiliter.style.pixelTop = clientRects[n].top +
document.body.scrollTop
document.all.hiliter.style.pixelBottom = clientRects[n].bottom
document.all.hiliter.style.pixelLeft = hLeft + document.body.scrollLeft
document.all.hiliter.style.pixelWidth = hRight - hLeft
document.all.hiliter.style.visibility = "visible"
} else if (n > 0) {
alert("The content does not have that many lines.")
document.all.hiliter.style.visibility = "hidden"
}
}
getClientRects() and getBoundClientRect() Methods
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