function getElementPos(tag) {
                var ua = navigator.userAgent.toLowerCase();
                var isOpera = (ua.indexOf('opera') != -1);
                var isIE = (ua.indexOf('msie') != -1 && !isOpera); // not opera spoof
                if (tag.parentNode === null || tag.style.display == 'none') {
                        return false;
                }
                var parent = null;
                var pos = [];
                var box;
                if (tag.getBoundingClientRect) 
                {
                        box = tag.getBoundingClientRect();
                        var scrollTop = Math.max(document.documentElement.scrollTop, document.body.scrollTop);
                        var scrollLeft = Math.max(document.documentElement.scrollLeft, document.body.scrollLeft);
                        pos[0] = box.left + scrollLeft + "px";
                        pos[1] = box.bottom +scrollTop + "px";
                        return pos;
                }
        }
</script>
</body>
</html>