(function($) {
$.fn.topMenu = function(options) {
	options = $.extend({
	speed : $.browser.msie ? 500 : 200
	}, options);
	 
	return this.each(function() {
		var nav = $(this),
		lis = $('li:not(.social)', nav),
		anchors = $('a', lis).css('padding', 0),
		spanHeight;
		 
		$.each(anchors, function() {
		var a = $(this),
		val = a.text();
		 
		a.html('<span>' + val + '</span> <span>' + val + '</span>')
		.parent('li')
		.height(a.children('span:first').outerHeight())
		.end()
		.children('span:first')
		.css('marginTop', 0) // IE
		});
		 
		spanHeight = lis.eq(0).height();
		 
		lis.hover(function() {
		$(this).find('span:first').animate({
		marginTop : '-' + spanHeight
		}, { duration: options.speed, queue : false });
		}, function() {
		$(this).find('span:first').animate({
		marginTop : 0
		}, { duration: options.speed, queue: false });
		});
	}); // end each
}
})(jQuery);