// Requires jquery.js
	// <script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
 
	// *** The Super Sticky Nav *** 
	// 
	// Usage - To your init_template function add:
	// 
	//   Sticky('nav1', 'nav2', 'nav3', etc.)
	// 
	// 
	// The arguments should be the names of the divs containing your navs,
	// so if your navs are in <div id="main_nav"> and <div id="sub_nav">
	// your prepare_navs function would look like this:
	// 
	//   Sticky('main_nav', 'sub_nav')
	// 
	// Sticky Nav expects that your navs are implemented as an unordered list:
	// 
	//   <div id="main_nav">
	// 		<ul>
	// 			<li><a href="/">Menu Item</a></li>
	// 		</ul>
	//   </div>
	// 
	// Sticky Nav adds the current class to the list item (<li>) not the anchor (<a>) in case you
	// need complex changes (like swapping out images). This behavior can be changed (see code).
	// 
	// Note: does nothing in preview mode
 
var Sticky = (function() {
	// Set these appropriately
	CURRENT_CLASS = 'active';
	PARENT_CLASS = 'parent';
 
	// home is usually root in the sitemap, but acts as level 1 on the site
	HOME_ACTS_AS_LEVEL_1 = true 	
 
	function make_current(li) {
		//put in all the stuff that's required to make your current <li> properly styled
		li.addClass(CURRENT_CLASS);
	}
 
	function make_parent(li) {
		//put in all the stuff that's required to make your parent <li> properly styled
		// uncomment line below to do the same for parents as for current
		// make_current(li)
		li.addClass(PARENT_CLASS);
	}
 
 
	function init() {
		if (location.href.match(/preview/)) {return}
 
		url_tree = parse_url(location.href);
 
 
		//find the current link and set it
		set_current(arguments, url_tree);
 
		// Remove home link if home is level 1
		if (HOME_ACTS_AS_LEVEL_1) {
		    url_tree.pop();
		}
 
		// Remove current link
		url_tree.shift();
 
		// Set all the parent links
		set_parents(arguments, url_tree);
 
	}
 
	function set_current(divs, url_tree) {
		jQuery.each(divs,
			function(i, div) {
				li = find_list_item(div, url_tree[0]);
				if (li) {
					make_current(li);
					//remove return statement if multiple divs may have current nav link
					return;
				}
			});
	}
 
	function set_parents(divs, url_tree) {
		jQuery.each(url_tree,
			function(i, url) {
				jQuery.each(divs,
					function(i, div) {
						li = find_list_item(div, url);
						if (li) {
							make_parent(li);
						}
					});
			});
	}
 
	function parse_url(href) {
		//Divides URL into its hierarchy and returns an array
		arr = [];
		function parse_branches(part) {
			arr.push(part);
			next = part.match("([^/]+///?.*?/)[^/]*/?$").pop();
			if (next == part) { return }
			parse_branches(next);
		}
		parse_branches(href);
		return arr;
	}
 
	function find_list_item(div_name, match) {
		// Takes a div containing a menu and a URL and returns the <li>
		// containing the matching <a>. Returns false if nothing is found
 
		div = jQuery("#" + div_name);
		result = jQuery.grep(div.find("a"), function(a,i) { 
			if ( a.href.match("[?#]")  || match.match("/preview_content\.php\?")) {
				return a.href == match ;
			} else return a.href == match.match("[^?#]+").pop();
		});
 
 
		if (result.length > 0) {
			// results[0].parentNode sets style on li containing the anchor, results[0] will set the style on the anchor itself
			return jQuery(result[0]);
		} else { return false; }
	}
 
	return init;
})();