如何获得鼠标位置单击后的屏幕位置(FF&IE)?
function absolutePoint(element) {
var result = { x: element.offsetLeft, y: element.offsetTop };
element = element.offsetParent;
while (element) {
result.x += element.offsetLeft;
result.y += element.offsetTop;
element = element.offsetParent;
}
return result;
}//这个怎么用 ?

function getMousePoint(event) {
var px, py;
if(document.all) { // is ie
px = event.clientX;
py = event.clientY;
px += document.documentElement.scrollLeft;
py += document.documentElement.scrollTop;
} else {
px = event.pageX;
py = event.pageY;
}
return { x: px, y: py };
}


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