/*
 * Facebox (for jQuery)
 * version: 1.1 (03/01/2008)
 * @requires jQuery v1.2 or later
 *
 * Examples at http://famspam.com/facebox/
 *
 * Licensed under the MIT:
 *   http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright 2007, 2008 Chris Wanstrath [ chris@ozmm.org ]
 *
 * Usage:
 *  
 *  jQuery(document).ready(function() {
 *    jQuery('a[rel*=facebox]').facebox() 
 *  })
 *
 *  <a href="#terms" rel="facebox">Terms</a>
 *    Loads the #terms div in the box
 *
 *  <a href="terms.html" rel="facebox">Terms</a>
 *    Loads the terms.html page in the box
 *
 *  <a href="terms.png" rel="facebox">Terms</a>
 *    Loads the terms.png image in the box
 *
 *
 *  You can also use it programmatically:
 * 
 *    jQuery.facebox('some html')
 *
 *  This will open a facebox with "some html" as the content.
 *    
 *    jQuery.facebox(function() { ajaxes })
 *
 *  This will show a loading screen before the passed function is called,
 *  allowing for a better ajax experience.
 *
 */
(
 	function($){
		$.facebox = function(data, klass){
			$.facebox.init()
			$.facebox.loading()
			$.isFunction(data) ? data.call($) : $.facebox.reveal(data, klass)
		}

		$.facebox.settings = {
			loading_image : 'images/loading.gif',
			close_image   : 'images/closelabel.gif',
			image_types   : [ 'png', 'jpg', 'jpeg', 'gif' ],
			facebox_html  : '\
			<div id="facebox" style="display:none;"> \
				<div class="popup"> \
					<table> \
						<tbody> \
							<tr> \
								<td class="tl"/><td class="b"/><td class="tr"/> \
							</tr> \
							<tr> \
								<td class="b"/> \
								<td class="body"> \
									<div class="footer-top"> \
										<a href="#" class="close"> \
											<img src="'+this.close_image+'" title="close" class="close_image" /> \
										</a> \
									</div> \
									<div class="content"> \
									</div> \
									<div class="footer"> \
										<a href="#" class="close"> \
											<img src="'+this.close_image+'" title="close" class="close_image" /> \
										</a> \
									</div> \
								</td> \
								<td class="b"/> \
							</tr> \
							<tr> \
								<td class="bl"/><td class="b"/><td class="br"/> \
							</tr> \
						</tbody> \
					</table> \
				</div> \
			</div>'
		}
		$.facebox.loading = function(){
			if($('#facebox .loading').length == 1) return true
			$('#facebox .content').empty()
			$('#facebox .body').children().hide().end().
			append('<div class="loading"><img src="'+$.facebox.settings.loading_image+'"/></div>')
			var pageScroll = $.facebox.getPageScroll()
			$('#facebox').css({
				top:	pageScroll[1] + ($.facebox.getPageHeight() / 10),
				left:	pageScroll[0]
			}).show()
			$(document).bind('keydown.facebox', function(e) {
				if (e.keyCode == 27) $.facebox.close()
			})
		}
		$.facebox.reveal = function(data, klass){
			if(klass) $('#facebox .content').addClass(klass)
			$('#facebox .content').append(data)
			$('#facebox .loading').remove()
			$('#facebox .body').children().fadeIn('normal')
		}
		$.facebox.close = function(){
			$(document).trigger('close.facebox')
			return false
		}
		$(document).bind('close.facebox', function() {
			$(document).unbind('keydown.facebox')
			$('#facebox').fadeOut(function(){
				$('#facebox .content').removeClass().addClass('content')
			})
		})
		$.fn.facebox = function(settings){
			$.facebox.init(settings)
			var image_types = $.facebox.settings.image_types.join('|')
			image_types = new RegExp('\.' + image_types + '$', 'i')
			function click_handler(){
				$.facebox.loading(true)
				// support for rel="facebox[.inline_popup]" syntax, to add a class
				var klass = this.rel.match(/facebox\[\.(\w+)\]/)
				if(klass) klass = klass[1]
				// div
				if(this.href.match(/#/)){
					var url    = window.location.href.split('#')[0]
					var target = this.href.replace(url,'')
					$.facebox.reveal($(target).clone().show(), klass)
				// image
				}else if(this.href.match(image_types)) {
					var image = new Image()
					image.onload = function(){
						$.facebox.reveal('<div class="image"><img src="' + image.src + '" /></div>', klass)
					}
					image.src = this.href
					// ajax
				}else{
					$.get(this.href, function(data) { $.facebox.reveal(data, klass) })
				}
				return false
			}
			this.click(click_handler)
			return this
		}
		$.facebox.init = function(settings){
			if($.facebox.settings.inited){
				return true
			}else{
				$.facebox.settings.inited = true
			}
			if(settings) $.extend($.facebox.settings, settings)
				$('body').append($.facebox.settings.facebox_html)
			var preload = [ new Image(), new Image() ]
			preload[0].src = $.facebox.settings.close_image
			preload[1].src = $.facebox.settings.loading_image
			$('#facebox').find('.b:first, .bl, .br, .tl, .tr').each(function() {
				preload.push(new Image())
				preload.slice(-1).src = $(this).css('background-image').replace(/url\((.+)\)/, '$1')
			})
			$('#facebox .close').click($.facebox.close)
			$('#facebox .close_image').attr('src', $.facebox.settings.close_image)
		}
		// getPageScroll() by quirksmode.com
		$.facebox.getPageScroll = function(){
			var xScroll, yScroll;
			if(self.pageYOffset){
				yScroll = self.pageYOffset;
				xScroll = self.pageXOffset;
			}else if(document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
				yScroll = document.documentElement.scrollTop;
				xScroll = document.documentElement.scrollLeft;
			}else if(document.body){// all other Explorers
				yScroll = document.body.scrollTop;
				xScroll = document.body.scrollLeft;	
			}
			return new Array(xScroll,yScroll) 
		}
		// adapter from getPageSize() by quirksmode.com
		$.facebox.getPageHeight = function(){
			var windowHeight
			if(self.innerHeight){	// all except Explorer
				windowHeight = self.innerHeight;
			}else if(document.documentElement && document.documentElement.clientHeight){ // Explorer 6 Strict Mode
				windowHeight = document.documentElement.clientHeight;
			}else if(document.body){ // other Explorers
				windowHeight = document.body.clientHeight;
			}	
			return windowHeight
		}
	}
)(jQuery);