Anthony Hiley-Mann avhm

## jQuery onscreen or offscreen selector
$.expr[':'].onscreen = function(obj){
	obj = jQuery(obj)
	return obj.position().top < jQuery(window).height() && obj.position().top < jQuery(window).width();
};

$.expr[':'].offscreen = function(obj){
	obj = jQuery(obj)
	return obj.position().top > jQuery(window).height() && obj.position().top > jQuery(window).width();
};
	$.expr[':'].onscreen = function(obj){
	obj = jQuery(obj)
	return obj.position().top < jQuery(window).height() && obj.position().top < jQuery(window).width();
	};

	$.expr[':'].offscreen = function(obj){
	obj = jQuery(obj)
	return obj.position().top > jQuery(window).height() && obj.position().top > jQuery(window).width();
	};