/*
根据id判断位置，返回X,Y轴的坐标
*/
function getElementPos(elementId){
var ua = navigator.userAgent.toLowerCase();
var isOpera = (ua.indexOf('opera') != -1);
var isIE = (ua.indexOf('msie') != -1 && !isOpera); // not opera spoof
var el = document.getElementById(elementId);
if (el.parentNode === null || el.style.display == 'none') {
return false;
}
var parent = null;
var pos = [];
var box;
if (el.getBoundingClientRect) // IE
{
box = el.getBoundingClientRect();
var scrollTop = Math.max(document.documentElement.scrollTop, document.body.scrollTop);
var scrollLeft = Math.max(document.documentElement.scrollLeft, document.body.scrollLeft);
return {
x: box.left + scrollLeft,
y: box.top + scrollTop
};
}
else
if (document.getBoxObjectFor) // gecko
{
box = document.getBoxObjectFor(el);
var borderLeft = (el.style.borderLeftWidth) ? parseInt(el.style.borderLeftWidth) : 0;
var borderTop = (el.style.borderTopWidth) ? parseInt(el.style.borderTopWidth) : 0;
pos = [box.x - borderLeft, box.y - borderTop];
}
else // safari & opera
{
pos = [el.offsetLeft, el.offsetTop];
parent = el.offsetParent;
if (parent != el) {
while (parent) {
pos[0] += parent.offsetLeft;
pos[1] += parent.offsetTop;
parent = parent.offsetParent;
}
}
if (ua.indexOf('opera') != -1 ||
(ua.indexOf('safari') != -1 && el.style.position == 'absolute')) {
pos[0] -= document.body.offsetLeft;
pos[1] -= document.body.offsetTop;
}
}
if (el.parentNode) {
parent = el.parentNode;
}
else {
parent = null;
}
while (parent && parent.tagName != 'BODY' && parent.tagName != 'HTML') { // account for any scrolled ancestors
pos[0] -= parent.scrollLeft;
pos[1] -= parent.scrollTop;
if (parent.parentNode) {
parent = parent.parentNode;
}
else {
parent = null;
}
}
return {
x: pos[0],
y: pos[1]
};
}
/*
函数功能：
兼容IE和FF返回目标对象包含边框的left、top、width、height值。其中left、top是相对于document.body的坐标。
需要参数1个：
[DOM]o=[DOM]要取值的对象。
*/
function getLTWH(id){
o = jQuery("#"+id);
if (o == null) {
return;
}
function getCurrentStyle(style){
var number = parseInt(o.currentStyle[style]);
return isNaN(number) ? 0 : number;
}
function getComputedStyle(style){
return parseInt(document.defaultView.getComputedStyle(o, null).getPropertyValue(style));
}
var oLTWH = {
"left": o.offsetLeft,
"top": o.offsetTop,
"width": o.offsetWidth,
"height": o.offsetHeight
};
while (true) {
o = o.offsetParent;
if (o == (document.body && null))
break;
oLTWH.left += o.offsetLeft;
oLTWH.top += o.offsetTop;
if (jQuery.browser.msie && jQuery.browser.version == "6.0") {
oLTWH.left += getCurrentStyle("borderLeftWidth");
oLTWH.top += getCurrentStyle("borderTopWidth");
}
else {
oLTWH.left += getComputedStyle("border-left-width");
oLTWH.top += getComputedStyle("border-top-width");
}
}
return oLTWH;
}
function getltByWindow(){
var windowWidth, windowHeight;// 窗口的高和宽
// 取得窗口的高和宽
if (self.innerHeight) {
windowWidth = self.innerWidth;
windowHeight = self.innerHeight;
}
else
if (document.documentElement &&
document.documentElement.clientHeight) {
windowWidth = document.documentElement.clientWidth;
windowHeight = document.documentElement.clientHeight;
}
else
if (document.body) {
windowWidth = document.body.clientWidth;
windowHeight = document.body.clientHeight;
}
var loc = {
left: windowWidth,
top: windowHeight
};
return loc;
}
相关资源：敏捷开发V1.0.pptx
