/*
	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
*/

var imgel = function(id){return document.getElementById(id);}

cPanel = 1;
cnt = 0;

function getcPanel()
{
    if (location.hash && parseInt(location.hash.slice(1))) {
        cPanel = parseInt(location.hash.slice(1));
    } else {
        cPanel = 1;
    };
    return cPanel;   
}

function setActiveImg(cPanel,panelCount,way){
    var container = $('#slider1');
    var panelWidth = container.find("div.panel").width();
    var panelCount = container.find("div.panel").size();
	/*s=document.getElementById('slider1').childNodes;
	var el='';
	for(i=0;i<s.length;i++){
		if(s[i].className=='panelContainer'){
			el = s[i];break;
		}
	}
	var l = -((elNum-1)*250);
	el.style.left=l+'px';
	setActive(elNum,elCount,way);*/
    if (way == 'l')
    {
        cPanel+=1;
        if (cPanel == 1) {
            cnt = - (panelWidth*(panelCount - 3));
            cPanel = panelCount;
            $('#iSlider').find("div.stripNav a.current").removeClass("current").parent().parent().find("li:last a").addClass("current");
        } else {
            cPanel -= 1;
            cnt = - (panelWidth*(cPanel - 1));
            $('#iSlider').find("div.stripNav a.current").removeClass("current").parent().prev().find("a").addClass("current");
        };
        //cnt = cnt/3;

        if (cPanel == 1)
        cnt=0;
        else
        if (cPanel != panelCount)
        cnt+=250;

        setActive(cPanel,panelCount,'l');
        $('#iSlider').find("div.panelContainer").animate({ left: cnt}, 750, "expoinout");
        location.hash = cPanel;        
    }
    
    if (way == 'r')
    {
        cPanel-=1;
        if (cPanel == panelCount) {
            cnt = 0;
            cPanel = 1;
            $('#iSlider').find("div.stripNav a.current").removeClass("current").parent().parent().find("a:eq(0)").addClass("current");
        } else {
            cnt = - (panelWidth*cPanel);
            cPanel += 1;
            $('#iSlider').find("div.stripNav a.current").removeClass("current").parent().next().find("a").addClass("current");
        };
        //cnt = cnt/3;
        if (cPanel == 1)
        cnt=0;
        else
        if (cPanel != panelCount)
        cnt+=250;
        else
        cnt+=500;

        setActive(cPanel,panelCount,'r');
        $('#iSlider').find("div.panelContainer").animate({ left: cnt}, 750, "expoinout");
        location.hash = cPanel;
    }
    return false;
}

function setActive(elNum,elCounts,way){
	//alert(elNum+' '+elCounts);



 	var id1 = 'pic'+elNum;
 	if(elNum == elCounts && way == 'l')
	 	var id3 = 'pic1';
	else
	if(elNum == elCounts && way == 'r')
	 	var id3 = 'pic'+(elCounts-1);
	else
 	if(elNum == 1 && way == 'r')
	 	var id3 = 'pic'+elCounts;
	else
 	if(elNum < elCounts && way == 'l')
 	{
	 	var id3 = 'pic'+(elNum+1);
	}
	else
 	if(elNum < elCounts && way == 'r')
 	{
	 	var id3 = 'pic'+(elNum-1);
	}

 	var id2 = 'pic'+elNum+'_2';
 	//alert(elNum+' '+way+' '+elCounts+' '+id1+' '+id3);
//alert(imgel(id1+'_1').alt);
	$("#step_content").load('/97/stepload/',{id: imgel(id1+'_1').alt});
 	imgel(id1+'_1').style.display = 'none';
 	imgel(id1+'_2').style.display = 'block';
 	imgel(id3+'_2').style.display = 'none';
 	imgel(id3+'_1').style.display = 'block';

}



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("csw").addClass("stripViewer");
		// Get the width of a panel, set from CSS...
		var panelWidth = container.find("div.panel").width();
		// panelCount gives us a count of the panels in the container...
		var panelCount = container.find("div.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("div.panelContainer").css("width" , stripViewerWidth);
		// Set the navWidth as a multiple of panelCount to account for margin-right on each li
		var navWidth = panelCount*2;

		// Specify the current panel.
		// 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)) <= panelCount) {
			cPanel = parseInt(location.hash.slice(1));
			cnt = - (panelWidth*(cPanel - 1));
			jQuery(this).find("div.panelContainer").css({ left: cnt });
		// Otherwise, we'll just set the current panel to 1...
		} else {
			cPanel = 1;
		};

		// Create appropriate nav
		container.each(function(i) {

			// Create the Left and Right arrows
			jQuery(this).before("<div class='stripNavL' id='stripNavL" + j + "'><a href='#'>Left</a><\/div>");
			jQuery(this).after("<div class='stripNavR' id='stripNavR" + j + "'><a href='#'>Right</a><\/div>");
            /*
			// Create the Tabs
			jQuery(this).before("<div class='stripNav' id='stripNav" + j + "'><ul><\/ul><\/div>");
			jQuery(this).find("div.panel").each(function(n) {
						jQuery("div#stripNav" + j + " ul").append("<li class='tab" + (n+1) + "'><a href='#" + (n+1) + "'>" + jQuery(this).attr("title") + "<\/a><\/li>");
			});

			// Tab nav
			/*
			jQuery("div#stripNav" + j + " a").each(function(z) {
				// Figure out the navWidth by adding up the width of each li
				navWidth += jQuery(this).parent().width();
				// What happens when a nav link is clicked
				jQuery(this).bind("click", function() {
					jQuery(this).addClass("current").parent().parent().find("a").not(jQuery(this)).removeClass("current"); // wow!
					var cnt = - (panelWidth*z);
					cPanel = z + 1;
					jQuery(this).parent().parent().parent().next().find("div.panelContainer").animate({ left: cnt}, settings.easeTime, settings.easeFunc);
				});
			});
             */
			// Left nav

			jQuery("div#stripNavL" + j + " a").click(function(){
                cPanel = getcPanel();
				if (cPanel == 1) {
					cnt = - (panelWidth*(panelCount - 3));
					cPanel = panelCount;
					jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().parent().find("li:last a").addClass("current");
				} else {
					cPanel -= 1;
					cnt = - (panelWidth*(cPanel - 1));
					jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().prev().find("a").addClass("current");
				};
				//cnt = cnt/3;
                
                if (cPanel == 1)
                cnt=0;
                else
                if (cPanel != panelCount)
                cnt+=250;
                
				setActive(cPanel,panelCount,'l');
				jQuery(this).parent().parent().find("div.panelContainer").animate({ left: cnt}, settings.easeTime, settings.easeFunc);
				// Change the URL hash (cross-linking)...
				location.hash = cPanel;
				return false;
			});

			// Right nav
			jQuery("div#stripNavR" + j + " a").click(function(){
                cPanel = getcPanel();
				if (cPanel == panelCount) {
					cnt = 0;
					cPanel = 1;
					jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().parent().find("a:eq(0)").addClass("current");
				} else {
					cnt = - (panelWidth*cPanel);
					cPanel += 1;
					jQuery(this).parent().parent().find("div.stripNav a.current").removeClass("current").parent().next().find("a").addClass("current");
				};
				//cnt = cnt/3;
                if (cPanel == 1)
                cnt=0;
                else
                if (cPanel != panelCount)
                cnt+=250;
                else
                cnt+=500;

				setActive(cPanel,panelCount,'r');
				jQuery(this).parent().parent().find("div.panelContainer").animate({ left: cnt}, settings.easeTime, settings.easeFunc);
				// Change the URL hash (cross-linking)...
				location.hash = cPanel;
				return false;
			});

			// Same-page cross-linking
			jQuery("a.cross-link").click(function(){
				jQuery(this).parents().find(".stripNav 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#stripNav" + 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)) <= panelCount) {
				jQuery("div#stripNav" + j + " a:eq(" + (location.hash.slice(1) - 1) + ")").addClass("current");
			} else {
				jQuery("div#stripNav" + j + " a:eq(0)").addClass("current");
			}

		});

		j++;
  });
};