/*!
* jCarousel - Riding carousels with jQuery
*   http://sorgalla.com/jcarousel/
*
* Copyright (c) 2006 Jan Sorgalla (http://sorgalla.com)
* Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
* and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
*
* Built on top of the jQuery library
*   http://jquery.com
*
* Inspired by the "Carousel Component" by Bill Scott
*   http://billwscott.com/carousel/
*/

(function ($) {
  /**
  * Creates a carousel for all matched elements.
  *
  * @example $("#mycarousel").jcarousel();
  * @before <ul id="mycarousel" class="jcarousel-skin-name"><li>First item</li><li>Second item</li></ul>
  * @result
  *
  * <div class="jcarousel-skin-name">
  *   <div class="jcarousel-container">
  *     <div class="jcarousel-clip">
  *       <ul class="jcarousel-list">
  *         <li class="jcarousel-item-1">First item</li>
  *         <li class="jcarousel-item-2">Second item</li>
  *       </ul>
  *     </div>
  *     <div disabled="disabled" class="jcarousel-prev jcarousel-prev-disabled"></div>
  *     <div class="jcarousel-next"></div>
  *   </div>
  * </div>
  *
  * @method jcarousel
  * @return jQuery
  * @param o {Hash|String} A set of key/value pairs to set as configuration properties or a method name to call on a formerly created instance.
  */
  $.fn.jcarousel = function (o) {
    if (typeof o == 'string') {
      var instance = $(this).data('jcarousel'), args = Array.prototype.slice.call(arguments, 1);
      return instance[o].apply(instance, args);
    } else
      return this.each(function () {
        $(this).data('jcarousel', new $jc(this, o));
      });
  };

  // Default configuration properties.
  var defaults = {
    vertical: false,
    start: 1,
    offset: 1,
    size: null,
    scroll: 3,
    visible: null,
    animation: 'normal',
    easing: 'swing',
    auto: 0,
    wrap: null,
    initCallback: null,
    reloadCallback: null,
    itemLoadCallback: null,
    itemFirstInCallback: null,
    itemFirstOutCallback: null,
    itemLastInCallback: null,
    itemLastOutCallback: null,
    itemVisibleInCallback: null,
    itemVisibleOutCallback: null,
    buttonNextHTML: '<div></div>',
    buttonPrevHTML: '<div></div>',
    buttonNextEvent: 'click',
    buttonPrevEvent: 'click',
    buttonNextCallback: null,
    buttonPrevCallback: null
  };

  /**
  * The jCarousel object.
  *
  * @constructor
  * @class jcarousel
  * @param e {HTMLElement} The element to create the carousel for.
  * @param o {Object} A set of key/value pairs to set as configuration properties.
  * @cat Plugins/jCarousel
  */
  $.jcarousel = function (e, o) {
    this.options = $.extend({}, defaults, o || {});

    this.locked = false;

    this.container = null;
    this.clip = null;
    this.list = null;
    this.buttonNext = null;
    this.buttonPrev = null;

    this.wh = !this.options.vertical ? 'width' : 'height';
    this.lt = !this.options.vertical ? 'left' : 'top';

    // Extract skin class
    var skin = '', split = e.className.split(' ');

    for (var i = 0; i < split.length; i++) {
      if (split[i].indexOf('jcarousel-skin') != -1) {
        $(e).removeClass(split[i]);
        skin = split[i];
        break;
      }
    }

    if (e.nodeName == 'UL' || e.nodeName == 'OL') {
      this.list = $(e);
      this.container = this.list.parent();

      if (this.container.hasClass('jcarousel-clip')) {
        if (!this.container.parent().hasClass('jcarousel-container'))
          this.container = this.container.wrap('<div></div>');

        this.container = this.container.parent();
      } else if (!this.container.hasClass('jcarousel-container'))
        this.container = this.list.wrap('<div></div>').parent();
    } else {
      this.container = $(e);
      this.list = this.container.find('ul,ol').eq(0);
    }

    if (skin != '' && this.container.parent()[0].className.indexOf('jcarousel-skin') == -1)
      this.container.wrap('<div class=" ' + skin + '"></div>');

    this.clip = this.list.parent();

    if (!this.clip.length || !this.clip.hasClass('jcarousel-clip'))
      this.clip = this.list.wrap('<div></div>').parent();

    this.buttonNext = $('.jcarousel-next', this.container);

    if (this.buttonNext.size() == 0 && this.options.buttonNextHTML != null)
      this.buttonNext = this.clip.after(this.options.buttonNextHTML).next();

    this.buttonNext.addClass(this.className('jcarousel-next'));

    this.buttonPrev = $('.jcarousel-prev', this.container);

    if (this.buttonPrev.size() == 0 && this.options.buttonPrevHTML != null)
      this.buttonPrev = this.clip.after(this.options.buttonPrevHTML).next();

    this.buttonPrev.addClass(this.className('jcarousel-prev'));

    this.clip.addClass(this.className('jcarousel-clip')).css({
      overflow: 'hidden',
      position: 'relative'
    });
    this.list.addClass(this.className('jcarousel-list')).css({
      overflow: 'hidden',
      position: 'relative',
      top: 0,
      left: 0,
      margin: 0,
      padding: 0
    });
    this.container.addClass(this.className('jcarousel-container')).css({
      position: 'relative'
    });

    var di = this.options.visible != null ? Math.ceil(this.clipping() / this.options.visible) : null;
    var li = this.list.children('li');

    var self = this;

    if (li.size() > 0) {
      var wh = 0, i = this.options.offset;
      li.each(function () {
        self.format(this, i++);
        wh += self.dimension(this, di);
      });

      this.list.css(this.wh, wh + 'px');

      // Only set if not explicitly passed as option
      if (!o || o.size === undefined)
        this.options.size = li.size();
    }

    // For whatever reason, .show() does not work in Safari...
    this.container.css('display', 'block');
    this.buttonNext.css('display', 'block');
    this.buttonPrev.css('display', 'block');

    this.funcNext = function () { self.next(); };
    this.funcPrev = function () { self.prev(); };
    this.funcResize = function () { self.reload(); };

    if (this.options.initCallback != null)
      this.options.initCallback(this, 'init');

    if ($.browser.safari) {
      this.buttons(false, false);
      $(window).bind('load.jcarousel', function () { self.setup(); });
    } else
      this.setup();
  };

  // Create shortcut for internal use
  var $jc = $.jcarousel;

  $jc.fn = $jc.prototype = {
    jcarousel: '0.2.4'
  };

  $jc.fn.extend = $jc.extend = $.extend;

  $jc.fn.extend({
    /**
    * Setups the carousel.
    *
    * @method setup
    * @return undefined
    */
    setup: function () {
      this.first = null;
      this.last = null;
      this.prevFirst = null;
      this.prevLast = null;
      this.animating = false;
      this.timer = null;
      this.tail = null;
      this.inTail = false;

      if (this.locked)
        return;

      this.list.css(this.lt, this.pos(this.options.offset) + 'px');
      var p = this.pos(this.options.start);
      this.prevFirst = this.prevLast = null;
      this.animate(p, false);

      $(window).unbind('resize.jcarousel', this.funcResize).bind('resize.jcarousel', this.funcResize);
    },

    /**
    * Clears the list and resets the carousel.
    *
    * @method reset
    * @return undefined
    */
    reset: function () {
      this.list.empty();

      this.list.css(this.lt, '0px');
      this.list.css(this.wh, '10px');

      if (this.options.initCallback != null)
        this.options.initCallback(this, 'reset');

      this.setup();
    },

    /**
    * Reloads the carousel and adjusts positions.
    *
    * @method reload
    * @return undefined
    */
    reload: function () {
      if (this.tail != null && this.inTail)
        this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) + this.tail);

      this.tail = null;
      this.inTail = false;

      if (this.options.reloadCallback != null)
        this.options.reloadCallback(this);

      if (this.options.visible != null) {
        var self = this;
        var di = Math.ceil(this.clipping() / this.options.visible), wh = 0, lt = 0;
        $('li', this.list).each(function (i) {
          wh += self.dimension(this, di);
          if (i + 1 < self.first)
            lt = wh;
        });

        this.list.css(this.wh, wh + 'px');
        this.list.css(this.lt, -lt + 'px');
      }

      this.scroll(this.first, false);
    },

    /**
    * Locks the carousel.
    *
    * @method lock
    * @return undefined
    */
    lock: function () {
      this.locked = true;
      this.buttons();
    },

    /**
    * Unlocks the carousel.
    *
    * @method unlock
    * @return undefined
    */
    unlock: function () {
      this.locked = false;
      this.buttons();
    },

    /**
    * Sets the size of the carousel.
    *
    * @method size
    * @return undefined
    * @param s {Number} The size of the carousel.
    */
    size: function (s) {
      if (s != undefined) {
        this.options.size = s;
        if (!this.locked)
          this.buttons();
      }

      return this.options.size;
    },

    /**
    * Checks whether a list element exists for the given index (or index range).
    *
    * @method get
    * @return bool
    * @param i {Number} The index of the (first) element.
    * @param i2 {Number} The index of the last element.
    */
    has: function (i, i2) {
      if (i2 == undefined || !i2)
        i2 = i;

      if (this.options.size !== null && i2 > this.options.size)
        i2 = this.options.size;

      for (var j = i; j <= i2; j++) {
        var e = this.get(j);
        if (!e.length || e.hasClass('jcarousel-item-placeholder'))
          return false;
      }

      return true;
    },

    /**
    * Returns a jQuery object with list element for the given index.
    *
    * @method get
    * @return jQuery
    * @param i {Number} The index of the element.
    */
    get: function (i) {
      return $('.jcarousel-item-' + i, this.list);
    },

    /**
    * Adds an element for the given index to the list.
    * If the element already exists, it updates the inner html.
    * Returns the created element as jQuery object.
    *
    * @method add
    * @return jQuery
    * @param i {Number} The index of the element.
    * @param s {String} The innerHTML of the element.
    */
    add: function (i, s) {
      var e = this.get(i), old = 0, add = 0;

      if (e.length == 0) {
        var c, e = this.create(i), j = $jc.intval(i);
        while (c = this.get(--j)) {
          if (j <= 0 || c.length) {
            j <= 0 ? this.list.prepend(e) : c.after(e);
            break;
          }
        }
      } else
        old = this.dimension(e);

      e.removeClass(this.className('jcarousel-item-placeholder'));
      typeof s == 'string' ? e.html(s) : e.empty().append(s);

      var di = this.options.visible != null ? Math.ceil(this.clipping() / this.options.visible) : null;
      var wh = this.dimension(e, di) - old;

      if (i > 0 && i < this.first)
        this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) - wh + 'px');

      this.list.css(this.wh, $jc.intval(this.list.css(this.wh)) + wh + 'px');

      return e;
    },

    /**
    * Removes an element for the given index from the list.
    *
    * @method remove
    * @return undefined
    * @param i {Number} The index of the element.
    */
    remove: function (i) {
      var e = this.get(i);

      // Check if item exists and is not currently visible
      if (!e.length || (i >= this.first && i <= this.last))
        return;

      var d = this.dimension(e);

      if (i < this.first)
        this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) + d + 'px');

      e.remove();

      this.list.css(this.wh, $jc.intval(this.list.css(this.wh)) - d + 'px');
    },

    /**
    * Moves the carousel forwards.
    *
    * @method next
    * @return undefined
    */
    next: function () {
      this.stopAuto();

      if (this.tail != null && !this.inTail)
        this.scrollTail(false);
      else
        this.scroll(((this.options.wrap == 'both' || this.options.wrap == 'last') && this.options.size != null && this.last == this.options.size) ? 1 : this.first + this.options.scroll);
    },

    /**
    * Moves the carousel backwards.
    *
    * @method prev
    * @return undefined
    */
    prev: function () {
      this.stopAuto();

      if (this.tail != null && this.inTail)
        this.scrollTail(true);
      else
        this.scroll(((this.options.wrap == 'both' || this.options.wrap == 'first') && this.options.size != null && this.first == 1) ? this.options.size : this.first - this.options.scroll);
    },

    /**
    * Scrolls the tail of the carousel.
    *
    * @method scrollTail
    * @return undefined
    * @param b {Boolean} Whether scroll the tail back or forward.
    */
    scrollTail: function (b) {
      if (this.locked || this.animating || !this.tail)
        return;

      var pos = $jc.intval(this.list.css(this.lt));

      !b ? pos -= this.tail : pos += this.tail;
      this.inTail = !b;

      // Save for callbacks
      this.prevFirst = this.first;
      this.prevLast = this.last;

      this.animate(pos);
    },

    /**
    * Scrolls the carousel to a certain position.
    *
    * @method scroll
    * @return undefined
    * @param i {Number} The index of the element to scoll to.
    * @param a {Boolean} Flag indicating whether to perform animation.
    */
    scroll: function (i, a) {
      if (this.locked || this.animating)
        return;

      this.animate(this.pos(i), a);
    },

    /**
    * Prepares the carousel and return the position for a certian index.
    *
    * @method pos
    * @return {Number}
    * @param i {Number} The index of the element to scoll to.
    */
    pos: function (i) {
      var pos = $jc.intval(this.list.css(this.lt));

      if (this.locked || this.animating)
        return pos;

      if (this.options.wrap != 'circular')
        i = i < 1 ? 1 : (this.options.size && i > this.options.size ? this.options.size : i);

      var back = this.first > i;

      // Create placeholders, new list width/height
      // and new list position
      var f = this.options.wrap != 'circular' && this.first <= 1 ? 1 : this.first;
      var c = back ? this.get(f) : this.get(this.last);
      var j = back ? f : f - 1;
      var e = null, l = 0, p = false, d = 0, g;

      while (back ? --j >= i : ++j < i) {
        e = this.get(j);
        p = !e.length;
        if (e.length == 0) {
          e = this.create(j).addClass(this.className('jcarousel-item-placeholder'));
          c[back ? 'before' : 'after'](e);

          if (this.first != null && this.options.wrap == 'circular' && this.options.size !== null && (j <= 0 || j > this.options.size)) {
            g = this.get(this.index(j));
            if (g.length)
              this.add(j, g.children().clone(true));
          }
        }

        c = e;
        d = this.dimension(e);

        if (p)
          l += d;

        if (this.first != null && (this.options.wrap == 'circular' || (j >= 1 && (this.options.size == null || j <= this.options.size))))
          pos = back ? pos + d : pos - d;
      }

      // Calculate visible items
      var clipping = this.clipping();
      var cache = [];
      var visible = 0, j = i, v = 0;
      var c = this.get(i - 1);

      while (++visible) {
        e = this.get(j);
        p = !e.length;
        if (e.length == 0) {
          e = this.create(j).addClass(this.className('jcarousel-item-placeholder'));
          // This should only happen on a next scroll
          c.length == 0 ? this.list.prepend(e) : c[back ? 'before' : 'after'](e);

          if (this.first != null && this.options.wrap == 'circular' && this.options.size !== null && (j <= 0 || j > this.options.size)) {
            g = this.get(this.index(j));
            if (g.length)
              this.add(j, g.find('>*').clone(true));
          }
        }

        c = e;
        var d = this.dimension(e);
        if (d == 0) {
          //alert('jCarousel: No width/height set for items. This will cause an infinite loop. Aborting...');
          return 0;
        }

        if (this.options.wrap != 'circular' && this.options.size !== null && j > this.options.size)
          cache.push(e);
        else if (p)
          l += d;

        v += d;

        if (v >= clipping)
          break;

        j++;
      }

      // Remove out-of-range placeholders
      for (var x = 0; x < cache.length; x++)
        cache[x].remove();

      // Resize list
      if (l > 0) {
        this.list.css(this.wh, this.dimension(this.list) + l + 'px');

        if (back) {
          pos -= l;
          this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) - l + 'px');
        }
      }

      // Calculate first and last item
      var last = i + visible - 1;
      if (this.options.wrap != 'circular' && this.options.size && last > this.options.size)
        last = this.options.size;

      if (j > last) {
        visible = 0, j = last, v = 0;
        while (++visible) {
          var e = this.get(j--);
          if (!e.length)
            break;
          v += this.dimension(e);
          if (v >= clipping)
            break;
        }
      }

      var first = last - visible + 1;
      if (this.options.wrap != 'circular' && first < 1)
        first = 1;

      if (this.inTail && back) {
        pos += this.tail;
        this.inTail = false;
      }

      this.tail = null;
      if (this.options.wrap != 'circular' && last == this.options.size && (last - visible + 1) >= 1) {
        var m = $jc.margin(this.get(last), !this.options.vertical ? 'marginRight' : 'marginBottom');
        if ((v - m) > clipping)
          this.tail = v - clipping - m;
      }

      // Adjust position
      while (i-- > first)
        pos += this.dimension(this.get(i));

      // Save visible item range
      this.prevFirst = this.first;
      this.prevLast = this.last;
      this.first = first;
      this.last = last;

      return pos;
    },

    /**
    * Animates the carousel to a certain position.
    *
    * @method animate
    * @return undefined
    * @param p {Number} Position to scroll to.
    * @param a {Boolean} Flag indicating whether to perform animation.
    */
    animate: function (p, a) {
      if (this.locked || this.animating)
        return;

      this.animating = true;

      var self = this;
      var scrolled = function () {
        self.animating = false;

        if (p == 0)
          self.list.css(self.lt, 0);

        if (self.options.wrap == 'circular' || self.options.wrap == 'both' || self.options.wrap == 'last' || self.options.size == null || self.last < self.options.size)
          self.startAuto();

        self.buttons();
        self.notify('onAfterAnimation');
      };

      this.notify('onBeforeAnimation');

      // Animate
      if (!this.options.animation || a == false) {
        this.list.css(this.lt, p + 'px');
        scrolled();
      } else {
        var o = !this.options.vertical ? { 'left': p} : { 'top': p };
        this.list.animate(o, this.options.animation, this.options.easing, scrolled);
      }
    },

    /**
    * Starts autoscrolling.
    *
    * @method auto
    * @return undefined
    * @param s {Number} Seconds to periodically autoscroll the content.
    */
    startAuto: function (s) {
      if (s != undefined)
        this.options.auto = s;

      if (this.options.auto == 0)
        return this.stopAuto();

      if (this.timer != null)
        return;

      var self = this;
      this.timer = setTimeout(function () { self.next(); }, this.options.auto * 1000);
    },

    /**
    * Stops autoscrolling.
    *
    * @method stopAuto
    * @return undefined
    */
    stopAuto: function () {
      if (this.timer == null)
        return;

      clearTimeout(this.timer);
      this.timer = null;
    },

    /**
    * Sets the states of the prev/next buttons.
    *
    * @method buttons
    * @return undefined
    */
    buttons: function (n, p) {
      if (n == undefined || n == null) {
        var n = !this.locked && this.options.size !== 0 && ((this.options.wrap && this.options.wrap != 'first') || this.options.size == null || this.last < this.options.size);
        if (!this.locked && (!this.options.wrap || this.options.wrap == 'first') && this.options.size != null && this.last >= this.options.size)
          n = this.tail != null && !this.inTail;
      }

      if (p == undefined || p == null) {
        var p = !this.locked && this.options.size !== 0 && ((this.options.wrap && this.options.wrap != 'last') || this.first > 1);
        if (!this.locked && (!this.options.wrap || this.options.wrap == 'last') && this.options.size != null && this.first == 1)
          p = this.tail != null && this.inTail;
      }

      var self = this;

      this.buttonNext[n ? 'bind' : 'unbind'](this.options.buttonNextEvent + '.jcarousel', this.funcNext)[n ? 'removeClass' : 'addClass'](this.className('jcarousel-next-disabled')).attr('disabled', n ? false : true);
      this.buttonPrev[p ? 'bind' : 'unbind'](this.options.buttonPrevEvent + '.jcarousel', this.funcPrev)[p ? 'removeClass' : 'addClass'](this.className('jcarousel-prev-disabled')).attr('disabled', p ? false : true);

      if (this.buttonNext.length > 0 && (this.buttonNext[0].jcarouselstate == undefined || this.buttonNext[0].jcarouselstate != n) && this.options.buttonNextCallback != null) {
        this.buttonNext.each(function () { self.options.buttonNextCallback(self, this, n); });
        this.buttonNext[0].jcarouselstate = n;
      }

      if (this.buttonPrev.length > 0 && (this.buttonPrev[0].jcarouselstate == undefined || this.buttonPrev[0].jcarouselstate != p) && this.options.buttonPrevCallback != null) {
        this.buttonPrev.each(function () { self.options.buttonPrevCallback(self, this, p); });
        this.buttonPrev[0].jcarouselstate = p;
      }
    },

    /**
    * Notify callback of a specified event.
    *
    * @method notify
    * @return undefined
    * @param evt {String} The event name
    */
    notify: function (evt) {
      var state = this.prevFirst == null ? 'init' : (this.prevFirst < this.first ? 'next' : 'prev');

      // Load items
      this.callback('itemLoadCallback', evt, state);

      if (this.prevFirst !== this.first) {
        this.callback('itemFirstInCallback', evt, state, this.first);
        this.callback('itemFirstOutCallback', evt, state, this.prevFirst);
      }

      if (this.prevLast !== this.last) {
        this.callback('itemLastInCallback', evt, state, this.last);
        this.callback('itemLastOutCallback', evt, state, this.prevLast);
      }

      this.callback('itemVisibleInCallback', evt, state, this.first, this.last, this.prevFirst, this.prevLast);
      this.callback('itemVisibleOutCallback', evt, state, this.prevFirst, this.prevLast, this.first, this.last);
    },

    callback: function (cb, evt, state, i1, i2, i3, i4) {
      if (this.options[cb] == undefined || (typeof this.options[cb] != 'object' && evt != 'onAfterAnimation'))
        return;

      var callback = typeof this.options[cb] == 'object' ? this.options[cb][evt] : this.options[cb];

      if (!$.isFunction(callback))
        return;

      var self = this;

      if (i1 === undefined)
        callback(self, state, evt);
      else if (i2 === undefined)
        this.get(i1).each(function () { callback(self, this, i1, state, evt); });
      else {
        for (var i = i1; i <= i2; i++)
          if (i !== null && !(i >= i3 && i <= i4))
            this.get(i).each(function () { callback(self, this, i, state, evt); });
      }
    },

    create: function (i) {
      return this.format('<li></li>', i);
    },

    format: function (e, i) {
      var $e = $(e).addClass(this.className('jcarousel-item')).addClass(this.className('jcarousel-item-' + i)).css({
        'float': 'left',
        'list-style': 'none'
      });
      $e.attr('jcarouselindex', i);
      return $e;
    },

    className: function (c) {
      return c + ' ' + c + (!this.options.vertical ? '-horizontal' : '-vertical');
    },

    dimension: function (e, d) {
      var el = e.jquery != undefined ? e[0] : e;

      var old = !this.options.vertical ?
                el.offsetWidth + $jc.margin(el, 'marginLeft') + $jc.margin(el, 'marginRight') :
                el.offsetHeight + $jc.margin(el, 'marginTop') + $jc.margin(el, 'marginBottom');

      if (d == undefined || old == d)
        return old;

      var w = !this.options.vertical ?
                d - $jc.margin(el, 'marginLeft') - $jc.margin(el, 'marginRight') :
                d - $jc.margin(el, 'marginTop') - $jc.margin(el, 'marginBottom');

      $(el).css(this.wh, w + 'px');

      return this.dimension(el);
    },

    clipping: function () {
      return !this.options.vertical ?
                this.clip[0].offsetWidth - $jc.intval(this.clip.css('borderLeftWidth')) - $jc.intval(this.clip.css('borderRightWidth')) :
                this.clip[0].offsetHeight - $jc.intval(this.clip.css('borderTopWidth')) - $jc.intval(this.clip.css('borderBottomWidth'));
    },

    index: function (i, s) {
      if (s == undefined)
        s = this.options.size;

      return Math.round((((i - 1) / s) - Math.floor((i - 1) / s)) * s) + 1;
    }
  });

  $jc.extend({
    /**
    * Gets/Sets the global default configuration properties.
    *
    * @method defaults
    * @return {Object}
    * @param d {Object} A set of key/value pairs to set as configuration properties.
    */
    defaults: function (d) {
      return $.extend(defaults, d || {});
    },
    margin: function (e, p) {
      if (!e)
        return 0;

      var el = e.jquery != undefined ? e[0] : e;

      if (p == 'marginRight' && $.browser.safari) {
        var old = { 'display': 'block', 'float': 'none', 'width': 'auto' }, oWidth, oWidth2;

        $.swap(el, old, function () { oWidth = el.offsetWidth; });

        old['marginRight'] = 0;
        $.swap(el, old, function () { oWidth2 = el.offsetWidth; });

        if (oWidth2 - oWidth != 0)
        {
          return oWidth2 - oWidth;
        }
      }

      return $jc.intval($.css(el, p));
    },

    intval: function (v) {
      v = parseInt(v);
      return isNaN(v) ? 0 : v;
    }
  });

})(jQuery);