Get a jQuery-set of all the visible elements from one Point in your document. The elements are in reversed order (the element on the top is the last element in the set).

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);