jQuery plugin to check if a point on the page is within an element.

jquery.isOver.js

/*
 * DWTFYW License
 * 
 * Author: Tony Brix, http://tonybrix.info
 * 
 * Check if a point is within an element.
 * Useful for mouseover on absolutely positioned overlapping elements.
 * 
 * Example:
 * $(document).mousemove(function(e){
 * 	if($("#element").isOver(e.pageX, e.pageY)){
 *		alert("Mouse is over element.");
 * 	}
 * });
 */
(function ($) {
	$.fn.isOver = function (x, y) {
		var result = false;
		this.each(function () {
			var $this = $(this);
			var top = $this.offset().top;
			var bottom = $this.outerHeight() + top;
			var left = $this.offset().left;
			var right = $this.outerWidth() + left;
			result = (x > left && x < right && y < bottom && y > top);
			if (result) {
				return false;
			}
		});
		return result;
	};
})(jQuery);