Retrieve the position (X,Y) of an HTML element relative to the browser window

Question

I want to know how to get the X and Y position of HTML elements such as img and div in JavaScript relative to the browser window.

Answer 1

After much research and testing this seems to work

function getPosition(e) {
    var isNotFirefox = (navigator.userAgent.toLowerCase().indexOf('firefox') == -1);
    var x = 0, y = 0;
    while (e) {
        x += e.offsetLeft - e.scrollLeft + (isNotFirefox ? e.clientLeft : 0);
        y += e.offsetTop - e.scrollTop + (isNotFirefox ? e.clientTop : 0);
        e = e.offsetParent;
    }
    return { x: x + window.scrollX, y: y + window.scrollY };
}

see http://jsbin.com/xuvovalifo/edit?html,js,output