//说明：剔除了元素在滚动容器的影响。如<div id="wzmx" style="width: 830px; height: 350px; overflow: auto;">
function findPos(obj) {
var curleft = obj.offsetLeft || 0;
var curtop = obj.offsetTop || 0;
while (obj = obj.offsetParent) {
curleft += (obj.offsetLeft - obj.scrollLeft)
curtop += (obj.offsetTop - obj.scrollTop)
}
return { x: curleft, y: curtop };
}
//不适用FF
作者：ikmb@163.com