elementsFromPoint

(function ($, document, undefined) {
	$.extend({
		/**
		 * A static jQuery-method.
		 * @param {number} x The x-coordinate of the Point.
		 * @param {number} y The y-coordinate of the Point.
		 * @param {Element} until (optional) The element at which traversing should stop. Default is document.body
		 * @return {jQuery} A set of all elements visible at the given point.
		 */
		elementsFromPoint: function(x,y, until) {
			until || (until = document.body); // Stop traversing here
			if (until instanceof $) until = until[0];

			var elements = [], previousDisplay = [], current, i, d, computedStyle = window.getComputedStyle;
			while ( (current = document.elementFromPoint(x,y)) && current != null && current !== until) {
				elements.push(current);
				previousDisplay.push(computedStyle ? computedStyle(current)["display"] : current.currentStyle.display);
				current.style.display = "none"; // Add display: none, to get to the underlying element
			}

			i = previousDisplay.length;
			while ((d = previousDisplay.pop()) != null && i--) {
				elements.get(i).style.display = d; // Restore the previous display-value
			}
			return $(elements);
		}
	});
})(jQuery, document);