/*
	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(function(){
	jQuery("div.tempload").prepend("<p class='loading'>Loading...<br /><img src='images/ajax-loader.gif' alt='loading...'/ ></p>");
});
var j = 0;
jQuery.fn.codaSlider = function(settings) {
	 settings = jQuery.extend({
     easeFunc: "expoinout",
     easeTime: 750,
     toolTip: false
  }, settings);
	return this.each(function(){
		var container = jQuery(this);
		// Remove the preloader gif...
		container.find("p.loading").remove();
		// Self-explanatory...
		container.removeClass("tempload").addClass("slideviewer");
		// Get the width of a frontpanel, set from CSS...
		var frontpanelWidth = container.find("div.frontpanel").width();
		// frontpanelCount gives us a count of the frontpanels in the container...
		var frontpanelCount = container.find("div.frontpanel").size();
		// Calculate the width of all the frontpanels when lined up end-to-end...
		var slideviewerWidth = frontpanelWidth*frontpanelCount;
		// Use the above width to specify the CSS width for the frontpanelContainer element...
		container.find("div.frontpanelContainer").css("width" , slideviewerWidth);
		// Set the navWidth as a multiple of frontpanelCount to account for margin-right on each li
		var navWidth = frontpanelCount*2;
		
		// Specify the current frontpanel.
		// If the loaded URL has a hash (cross-linking), we're going to use that hash to give the slider a specific starting position...
		if (location.hash && parseInt(location.hash.slice(1)) <= frontpanelCount) {
			var cfrontpanel = parseInt(location.hash.slice(1));
			var cnt = - (frontpanelWidth*(cfrontpanel - 1));
			jQuery(this).find("div.frontpanelContainer").css({ left: cnt });
		// Otherwise, we'll just set the current frontpanel to 1...
		} else { 
			var cfrontpanel = 1;
		};
		
		// Create appropriate nav
		container.each(function(i) {
			
			// Create the Left and Right arrows
			 jQuery(this).before("<div class='slidenavL' id='slidenavL" + j + "'><a href='#'>Left</a><\/div>");
			 jQuery(this).after("<div class='slidenavR' id='slidenavR" + j + "'><a href='#'>Right</a><\/div>");
			
			
			// Left nav
			jQuery("div#slidenavL" + j + " a").click(function(){
				if (cfrontpanel == 1) {
					var cnt = - (frontpanelWidth*(frontpanelCount - 1));
					cfrontpanel = frontpanelCount;
					jQuery(this).parent().parent().find("div.slidenav a.current").removeClass("current").parent().parent().find("li:last a").addClass("current");
				} else {
					cfrontpanel -= 1;
					var cnt = - (frontpanelWidth*(cfrontpanel - 1));
					jQuery(this).parent().parent().find("div.slidenav a.current").removeClass("current").parent().prev().find("a").addClass("current");
				};
				jQuery(this).parent().parent().find("div.frontpanelContainer").animate({ left: cnt}, settings.easeTime, settings.easeFunc);
				// Change the URL hash (cross-linking)...
				location.hash = cfrontpanel;
				return false;
			});
			
			// Right nav
			jQuery("div#slidenavR" + j + " a").click(function(){
				if (cfrontpanel == frontpanelCount) {
					var cnt = 0;
					cfrontpanel = 1;
					jQuery(this).parent().parent().find("div.slidenav a.current").removeClass("current").parent().parent().find("a:eq(0)").addClass("current");
				} else {
					var cnt = - (frontpanelWidth*cfrontpanel);
					cfrontpanel += 1;
					jQuery(this).parent().parent().find("div.slidenav a.current").removeClass("current").parent().next().find("a").addClass("current");
				};
				jQuery(this).parent().parent().find("div.frontpanelContainer").animate({ left: cnt}, settings.easeTime, settings.easeFunc);
				// Change the URL hash (cross-linking)...
				location.hash = cfrontpanel;
				return false;
			});
			
			// Same-page cross-linking
			jQuery("a.cross-link").click(function(){
				jQuery(this).parents().find(".slidenav ul li a:eq(" + (parseInt(jQuery(this).attr("href").slice(1)) - 1) + ")").trigger('click');
			});	
			
			// Set the width of the nav using the navWidth figure we calculated earlier. This is so the nav can be centred above the slider
			jQuery("div#slidenav" + j).css("width" , navWidth);
			
			// Specify which tab is initially set to "current". Depends on if the loaded URL had a hash or not (cross-linking).
			if (location.hash && parseInt(location.hash.slice(1)) <= frontpanelCount) {
				jQuery("div#slidenav" + j + " a:eq(" + (location.hash.slice(1) - 1) + ")").addClass("current");
			} else {
				jQuery("div#slidenav" + j + " a:eq(0)").addClass("current");
			}
			
		});
		
		j++;
  });
};