/* 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
//and mx. Mar 09

(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;

    $(".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;
      }

      opts.callback(cur);

      $(".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();
      }, opts.timeout);

    }

    dotimer();
  }; // jFlow

  $.fn.jFlow.defaults = {
    easing: "swing",
    duration: 400,
    timeout: 5000,
    width: "100%",
    callback: function(i) {}
  };

})(jQuery);