/* scrolling side banner - skyscraper */

$(function() {
	var skyscraper = $("div.skyscraper");
	
	if (skyscraper.length > 0) {
		var offset = skyscraper.offset();
		var topPadding = 135;
		
		function scrollSkyscraper(decrement) {
			if ($(window).scrollTop() > topPadding) {
				skyscraper.stop().animate({
					marginTop: $(window).scrollTop() - offset.top + topPadding
				});
			} else {
				skyscraper.stop().animate({
					marginTop: topPadding
				});
			};
		}
		scrollSkyscraper();
		
		$(window).scroll(function() {
			scrollSkyscraper();
		});
	}
});