获取html元素所在页面的坐标

function findPosition(oElement) {
var x2 = 0;
var y2 = 0;
var width = oElement.offsetWidth;
var height = oElement.offsetHeight;
if (typeof (oElement.offsetParent) != 'undefined') {
for (var posX = 0, posY = 0; oElement; oElement = oElement.offsetParent) {
posX += oElement.offsetLeft;
posY += oElement.offsetTop;
}
x2 = posX + width;
y2 = posY + height;
//return [ posX, posY ,x2, y2];
return { x: posX, y: posY, xx: x2, yy: y2 };
} else {
x2 = oElement.x + width;
y2 = oElement.y + height;
return { x: oElement.x, y: oElement.y, xx: x2, yy: y2 };
}
}