Setting the body class to whichever element is clicked

gistfile1.js

$('.nav li a').click(function() {

	// remove the extra classes before adding the current clicked class
	$('.nav li a').each(function(i, el) { // iterate through all of the menu items
		 // get the current elements class
		var removeClass = $(el).attr('class');
		
		// remove it from the body, if it has the class.
		if($('body').hasClass(removeClass)) $('body').removeClass(removeClass); 
	});

	// get the class of the element that was clicked
	var classFromClickedNav = $(this).attr('class'); 
	
	// adds the class to the body tag.
	$('body').addClass(classFromClickedNav); 

});