/* Copyright (c) 2008 Kean Loong Tan http://www.gimiti.com/kltan
 * Licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * jFlow
 * Version: 1.1 (May 22, 2008)
 * Requires: jQuery 1.2+
 */

//modified by LandRover 30th May 08

(function($) {

        $.fn.jFlow = function(options) {
                var opts = $.extend({}, $.fn.jFlow.defaults, options);
                var cur = 0;
                var timer;
                var selected_class = "jFlowSelected";
                var maxi = $(".jFlowControl").length;
                $(this).find(".jFlowControl").each(function(i){
                        $(this).click(function(){
                                dotimer();

                                $(".jFlowControl").removeClass(selected_class);
                                $(this).addClass(selected_class);
                                //alert(cur);
                                //alert(i);
                                var dur = Math.abs(cur-i);
                                $(opts.slides).animate({
                                        marginLeft: "-" + (i * $(opts.slides).find(":first-child").width() + "px")
                                }, opts.duration*(dur));
                                cur = i;
                        });
                });

                $(opts.slides).before('<div id="jFlowSlide"></div>').appendTo("#jFlowSlide");

                $(opts.slides).find("div").each(function(){
                        $(this).before('<div class="jFlowSlideContainer"></div>').appendTo($(this).prev());
                });

                //initialize the controller
                $(".jFlowControl").eq(cur).addClass(selected_class);

                var resize = function (x){
                        $("#jFlowSlide").css({
                                position: "relative",
                                width: opts.width,
                                height: opts.height,
                                overflow: "hidden"
                        });

                        $(opts.slides).css({
                                position:"relative",
                                width: $("#jFlowSlide").width()*$(".jFlowControl").length+"px",
                                height: $("#jFlowSlide").height()+"px",
                                overflow: "hidden"
                        });

                        $(opts.slides).children().css({
                                position: "relative",
                                width: $("#jFlowSlide").width()+"px",
                                height: $("#jFlowSlide").height()+"px",
                                "float":"left"
                        });

                        $(opts.slides).css({
                                marginLeft: "-" + (cur * $(opts.slides).find(":first-child").width() + "px")
                        });
                }

                resize();

                $(window).resize(function(){
                        resize();
                });

                $(".jFlowPrev").click(function(){
                        dotimer();
                        doprev();
                });

                var doprev = function (x){
                        if (cur > 0)
                                cur--;
                        else
                                cur = maxi -1;

                        $(".jFlowControl").removeClass(selected_class);
                        $(opts.slides).animate({
                                marginLeft: "-" + (cur * $(opts.slides).find(":first-child").width() + "px")
                        }, opts.duration);
                        $(".jFlowControl").eq(cur).addClass(selected_class);
                }

                $(".jFlowNext").click(function(){
                        donext();
                        dotimer();
                });

                var donext = function (x){
                        if (cur < maxi - 1)
                                cur++;
                        else
                                cur = 0;

                        $(".jFlowControl").removeClass(selected_class);
                        $(opts.slides).animate({
                                marginLeft: "-" + (cur * $(opts.slides).find(":first-child").width() + "px")
                        }, opts.duration);
                        $(".jFlowControl").eq(cur).addClass(selected_class);
                }

                var dotimer = function (x){
                        if(timer != null)
                            clearInterval(timer);

                        timer = setInterval(function() {
                                donext();
                            }, 6000);

                    }

                dotimer();
        };

        $.fn.jFlow.defaults = {
                easing: "swing",
                duration: 400,
                width: "100%"
        };

})(jQuery);