/*
 * yuga.js 0.3.0 -
 *
 * Copyright (c) 2007 Kyosuke Nakamura (kyosuke.jp)
 * Licensed under the MIT License:
 * http://www.opensource.org/licenses/mit-license.php
 *
 * Since:     2006-10-30
 * Modified:  2007-06-18
 *
 */

var yuga = {
	preloader: {
		loadedImages: [],
		load: function (url){
			var img = this.loadedImages;
			var l = img.length;
			img[l] = new Image();
			img[l].src = url;
		}
	},
	URI: function(s){
		this.originalPath = s;
		this.getAbsolutePath = function(path){
			if (!path.match(/^(mailto:)|(javascript:)/)) {
				var img = new Image();
				img.src = path;
				path = img.src;
				img.src = '#';
			}
			return path;
		};
		this.absolutePath = this.getAbsolutePath(s);
		this.isSelfLink = (this.absolutePath == location.href);
		var fields = {'schema' : 2, 'username' : 5, 'password' : 6, 'host' : 7, 'path' : 9, 'query' : 10, 'fragment' : 11};
		var r = /^((\w+):)?(\/\/)?((\w+):?(\w+)?@)?([^\/\?:]+):?(\d+)?(\/?[^\?#]+)?\??([^#]+)?#?(\w*)/.exec(this.absolutePath);
		for (var field in fields) {
			this[field] = r[fields[field]]; 
		}
	}
};

$(function() {
	// rollover _on
	$('.btn').each(function(){
		this.originalSrc = $(this).attr('src');
		this.rolloverSrc = this.originalSrc.replace(/(\.gif|\.jpg|\.png)/, "_on$1");
		yuga.preloader.load(this.rolloverSrc);
	}).hover(function(){
		$(this).attr('src',this.rolloverSrc);
	},function(){
		$(this).attr('src',this.originalSrc);
	});
	
	// current _cr
	$('a[@href]').each(function(){
		var href = new yuga.URI(this.getAttribute('href'));
		if (href.isSelfLink && !href.fragment) {
			$(this).addClass('current');
			$(this).find('img').each(function(){
				$(this).unbind('mouseover');
				$(this).unbind('mouseout');
				this.currentSrc = this.getAttribute('src').replace(/(\.gif|\.jpg|\.png)/, "_cr$1");
				$(this).attr('src',this.currentSrc);
			});
		}
	});
});