/**
 * jCarousel - Riding carousels with jQuery
 *   http://sorgalla.com/jcarousel/
 *
 * Copyright (c) 2006 Jan Sorgalla (http://sorgalla.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) 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"><li>First item</li><li>Second item</li></ul>
     * @result
     *
     * <div class="jcarousel-skin-name jcarousel-container">
     *	 <div disabled="disabled" class="jcarousel-prev jcarousel-prev-disabled"></div>
     *	 <div class="jcarousel-next"></div>
     *	 <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>
     *
     * @name jcarousel
     * @type jQuery
     * @param Hash o A set of key/value pairs to set as configuration properties.
     * @cat Plugins/jCarousel
     */
    $.fn.jcarousel = function(o) {
	return this.each(function() {
	    new $jc(this, o);
	});
    };

    // Default configuration properties.
    var defaults = {
	vertical: false,
	start: 1,
	offset: 1,
	size: null,
	scroll: 2,
	visible: 2,
	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
     * @name $.jcarousel
     * @param Object e The element to create the carousel for.
     * @param Hash o 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]);
		var 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 = $(e).find('>ul,>ol,div>ul,div>ol');
	}

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

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

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

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

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

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

	this.clip.addClass(this.className('jcarousel-clip'));
	this.list.addClass(this.className('jcarousel-list'));
	this.container.addClass(this.className('jcarousel-container'));

	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(); };

	$(window).bind('resize', function() { self.reload(); });

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

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

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

    $jc.fn = $jc.prototype = {
	jcarousel: '0.2.3'
    };

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

    $jc.fn.extend({
	/**
	 * Setups the carousel.
	 *
	 * @name setup
	 * @type undefined
	 * @cat Plugins/jCarousel
	 */
	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);
	},

	/**
	 * Clears the list and resets the carousel.
	 *
	 * @name reset
	 * @type undefined
	 * @cat Plugins/jCarousel
	 */
	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.
	 *
	 * @name reload
	 * @type undefined
	 * @cat Plugins/jCarousel
	 */
	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.
	 *
	 * @name lock
	 * @type undefined
	 * @cat Plugins/jCarousel
	 */
	lock: function() {
	    this.locked = true;
	    this.buttons();
	},

	/**
	 * Unlocks the carousel.
	 *
	 * @name unlock
	 * @type undefined
	 * @cat Plugins/jCarousel
	 */
	unlock: function() {
	    this.locked = false;
	    this.buttons();
	},

	/**
	 * Sets the size of the carousel.
	 *
	 * @name size
	 * @type undefined
	 * @param Number s The size of the carousel.
	 * @cat Plugins/jCarousel
	 */
	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).
	 *
	 * @name get
	 * @type bool
	 * @param Number i The index of the (first) element.
	 * @param Number i2 The index of the last element.
	 * @cat Plugins/jCarousel
	 */
	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.
	 *
	 * @name get
	 * @type jQuery
	 * @param Number i The index of the element.
	 * @cat Plugins/jCarousel
	 */
	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.
	 *
	 * @name add
	 * @type jQuery
	 * @param Number i The index of the element.
	 * @param String s The innerHTML of the element.
	 * @cat Plugins/jCarousel
	 */
	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.
	 *
	 * @name remove
	 * @type undefined
	 * @param Number i The index of the element.
	 * @cat Plugins/jCarousel
	 */
	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.
	 *
	 * @name next
	 * @type undefined
	 * @cat Plugins/jCarousel
	 */
	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.
	 *
	 * @name prev
	 * @type undefined
	 * @cat Plugins/jCarousel
	 */
	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.
	 *
	 * @name scrollTail
	 * @type undefined
	 * @param Bool b Whether scroll the tail back or forward.
	 * @cat Plugins/jCarousel
	 */
	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.
	 *
	 * @name scroll
	 * @type undefined
	 * @param Number i The index of the element to scoll to.
	 * @param Bool a Flag indicating whether to perform animation.
	 * @cat Plugins/jCarousel
	 */
	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.
	 *
	 * @name pos
	 * @type Number
	 * @param Number i The index of the element to scoll to.
	 * @cat Plugins/jCarousel
	 */
	pos: function(i) {
	    if (this.locked || this.animating)
		return;

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

	    // 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;

	    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);
		}

		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);
		}

		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.
	 *
	 * @name animate
	 * @type undefined
	 * @param mixed p Position to scroll to.
	 * @param Bool a Flag indicating whether to perform animation.
	 * @cat Plugins/jCarousel
	 */
	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 == '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.
	 *
	 * @name auto
	 * @type undefined
	 * @param Number s Seconds to periodically autoscroll the content.
	 * @cat Plugins/jCarousel
	 */
	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.
	 *
	 * @name stopAuto
	 * @type undefined
	 * @cat Plugins/jCarousel
	 */
	stopAuto: function() {
	    if (this.timer == null)
		return;

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

	/**
	 * Sets the states of the prev/next buttons.
	 *
	 * @name buttons
	 * @type undefined
	 * @cat Plugins/jCarousel
	 */
	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, this.funcNext)[n ? 'removeClass' : 'addClass'](this.className('jcarousel-next-disabled')).attr('disabled', n ? false : true);
	    this.buttonPrev[p ? 'bind' : 'unbind'](this.options.buttonPrevEvent, 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: 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 >= 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));
	    $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({
	/**
	 * Sets the global default configuration properties.
	 *
	 * @name defaults
	 * @descr Sets the global default configuration properties.
	 * @type undefined
	 * @param Hash d A set of key/value pairs to set as configuration properties.
	 * @cat Plugins/jCarousel
	 */
	defaults: function(d) {
	    $.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; });

		return oWidth2 - oWidth;
	    }

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

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

})(jQuery);