$(document).ready(function(){
	$('#nav ul li a').hover(
		function() {
			var currentBigImage = $('#home-photos img').attr('src');
			var newBigImage = $(this).attr('rel');
			var currentThumbSrc = $(this).attr('href');
			switchImage(newBigImage, currentBigImage, currentThumbSrc);
		},
		function() {}
	);	
	function switchImage(imageHref, currentBigImage, currentThumbSrc) {		 
		var theBigImage = $('#home-photos img');		
		if (imageHref != currentBigImage) {		
			theBigImage.fadeOut(250, function(){
				theBigImage.attr('src', imageHref).fadeIn(250);				
				var newImageDesc = $("#nav ul li a img[src='"+currentThumbSrc+"']").attr('alt');
				$('p#desc').empty().html(newImageDesc);
			});			
		}		
	}	
});