/*
	jQuery Coda-Slider v1.1 - http://www.ndoherty.com/coda-slider
	
	Copyright (c) 2007 Niall Doherty
	
	Inspired by the clever folks at http://www.panic.com/coda
	Many thanks to Gian Carlo Mingati. Coda-Slider is a heavily modified version of his slideViewer, which can be found at  http://www.gcmingati.net/wordpress/wp-content/lab/jquery/imagestrip/imageslide-plugin.html
	
	Requirements:
	-  jQuery 1.2 ... available via  http://www.jquery.com
	-  jQuery easing plugin (1.2) ... available via  http://gsgd.co.uk/sandbox/jquery/easing/
	- jQuery easing compatability plugin ... available via  http://gsgd.co.uk/sandbox/jquery/easing/
	- CSS included in index.html
*/
jQuery.fn.codaSlider = function(settings) {
	settings = jQuery.extend({
	easeFunc: "expoinout",
	easeTime: 750,
	cPanel: 1,
	cPanelSize: null,
	beforFn: function(){},
	afterFn: function(){}
  }, settings);
	return this.each(function(){
		var container = jQuery(this);
		// Get the width of a panel, set from CSS...
		var panelWidth = (settings.cPanelSize!==null) ? settings.cPanelSize : container.find(".panel").width();
		// panelCount gives us a count of the panels in the container...
		var panelCount = container.find(".panel").size();
		// Calculate the width of all the panels when lined up end-to-end...
		var stripViewerWidth = panelWidth*panelCount;
		// Use the above width to specify the CSS width for the panelContainer element...
		container.find(".panelContainer").css("width" , stripViewerWidth);
		
		// Specify the current panel.
		settings.cPanel = 1;
		
		// Create appropriate nav
		container.each(function(i) {	
			
			// Left nav
			container.find(".NavPrev").click(function(){
				settings.beforFn();
				if (settings.cPanel == 1) {
					var cnt = - (panelWidth*(panelCount - 1));
					settings.cPanel = panelCount;
				} else {
					settings.cPanel -= 1;
					var cnt = - (panelWidth*(settings.cPanel - 1));
				};
				container.find(".panelContainer").animate({ left: cnt}, settings.easeTime, settings.easeFunc, settings.afterFn());
				return false;
			});
			
			// Right nav
			container.find(".NavNext").click(function(){
				settings.beforFn();	
				if (settings.cPanel == panelCount) {
					var cnt = 0;
					settings.cPanel = 1;
				} else {
					var cnt = - (panelWidth*settings.cPanel);
					settings.cPanel += 1;
				};
				container.find(".panelContainer").animate({ left: cnt}, settings.easeTime, settings.easeFunc, settings.afterFn());
				settings.afterFn();
				return false;
			});
			
		});
  });
};