/*
             #      jQuery Slinky Slider Plugin
             #      ---------------------------
             #      Version:            1.0
             #      ---------------------------
             #      Author:             samhs
             #      http://ohwrite.co.uk/jquery/jquery-plugin-slinky-slider/
             #      http://docs.jquery.com/Plugins/SlinkySlider
             #
             #      Copyright (c) 2009 Sam Hampton-Smith
             #
             #      Dual licensed under the MIT and GPL licenses:
             #      http://www.opensource.org/licenses/mit-license.php
             #      http://www.gnu.org/licenses/gpl.html
             #
             #      Please view files mit.txt and gpl.txt for full license terms
             #      And include these two files if you redistribute this software
             */


(function($) {
           
            $.fn.slinkySlider = function(settings) {    
                // Utility variables - do not alter
                var currentpanel;
                var panelwidth;
                var goforward = true;
                var t;
                settings = $.extend({}, $.fn.slinkySlider.defaults, settings);  

                return $(this).each(function(){
                    panelwidth = $(this).width();
                    $(this).css("overflow","hidden");
                    settings.largesize = panelwidth-((settings.numberofpanels-1)*(settings.smallsize+settings.panelspacing));
                    container = $(this);
                    elheight = container.height();
                    for (var i=1;i<=settings.numberofpanels;i++) {
                        $(container).append("<div class='panelwrappers'><div class='panel'></div></div>");
                        $(".panelwrappers:last .panel").load(settings.panelname+i+".html").parents(".panelwrappers").data("number",i);
                    }
                    currentpanel = $(".panelwrappers:first");
                    $(".panelwrappers").css({
                            "width"     :   settings.smallsize+"px", 
                            "float"     :   "left",
                            "height"    :   elheight+"px"});
                    $(".panels").css({
                            "width"     :   settings.largesize+"px",
                            "height"    :   "100%"}); 
                    $(currentpanel).css("width",settings.largesize+"px");
                    $(".panelwrappers").not(":last").css("margin-right",settings.panelspacing+"px");
                    $(".panelwrappers").each(function(){
                        $(this).mouseover(function(){switchpanel(this);});
                    });
                    if (settings.doauto) t = setTimeout(function(){switchpanel(null);},settings.autotimer);
                });

                function switchpanel(newpanel) {
                    if (newpanel==currentpanel) {
                        // do nothing because we're already on this panel
                    } else {
                        var auto = false;
                        if (newpanel==null) {
                            auto = true;
                            if (goforward && $(currentpanel).data("number")==settings.numberofpanels) {
                                goforward=false;
                            }
                            if (!goforward && $(currentpanel).data("number")==1) {
                                goforward=true;
                            }                       
                            if (goforward) {
                                newpanel = $(currentpanel).next();
                            } else {
                                newpanel = $(currentpanel).prev();
                            }                           
                        }
                        else {
                            $(".panelwrappers").stop();
                            clearTimeout(t);
                        }
                        $(".panelwrappers").not(newpanel).animate({width: settings.smallsize+"px"},settings.transition, "swing");
                        $(newpanel).animate({width: settings.largesize+"px"},settings.transition, "swing");             
                        currentpanel = newpanel;
                        if (auto) t = setTimeout(function(){switchpanel(null);},settings.autotimer); 
                }
            }
        }
            
        $.fn.slinkySlider.defaults = {
            autotimer:8000,
            transition:1000,
            panelspacing:3,
            smallsize:20,
            numberofpanels:5,
            largesize:0,
            doauto:true,
            panelname:"panel"
        }

})(jQuery);