/* for jQuery.LocalScroll, see line 218 */
/**
 * jQuery.ScrollTo
 * Copyright (c) 2007-2009 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
 * Dual licensed under MIT and GPL.
 * Date: 5/25/2009
 *
 * @projectDescription Easy element scrolling using jQuery.
 * http://flesler.blogspot.com/2007/10/jqueryscrollto.html
 * Works with jQuery +1.2.6. Tested on FF 2/3, IE 6/7/8, Opera 9.5/6, Safari 3, Chrome 1 on WinXP.
 *
 * @author Ariel Flesler
 * @version 1.4.2
 *
 * @id jQuery.scrollTo
 * @id jQuery.fn.scrollTo
 * @param {String, Number, DOMElement, jQuery, Object} target Where to scroll the matched elements.
 *	  The different options for target are:
 *		- A number position (will be applied to all axes).
 *		- A string position ('44', '100px', '+=90', etc ) will be applied to all axes
 *		- A jQuery/DOM element ( logically, child of the element to scroll )
 *		- A string selector, that will be relative to the element to scroll ( 'li:eq(2)', etc )
 *		- A hash { top:x, left:y }, x and y can be any kind of number/string like above.
*		- A percentage of the container's dimension/s, for example: 50% to go to the middle.
 *		- The string 'max' for go-to-end.
 * @param {Number} duration The OVERALL length of the animation, this argument can be the settings object instead.
 * @param {Object,Function} settings Optional set of settings or the onAfter callback.
 *	 @option {String} axis Which axis must be scrolled, use 'x', 'y', 'xy' or 'yx'.
 *	 @option {Number} duration The OVERALL length of the animation.
 *	 @option {String} easing The easing method for the animation.
 *	 @option {Boolean} margin If true, the margin of the target element will be deducted from the final position.
 *	 @option {Object, Number} offset Add/deduct from the end position. One number for both axes or { top:x, left:y }.
 *	 @option {Object, Number} over Add/deduct the height/width multiplied by 'over', can be { top:x, left:y } when using both axes.
 *	 @option {Boolean} queue If true, and both axis are given, the 2nd axis will only be animated after the first one ends.
 *	 @option {Function} onAfter Function to be called after the scrolling ends.
 *	 @option {Function} onAfterFirst If queuing is activated, this function will be called after the first scrolling ends.
 * @return {jQuery} Returns the same jQuery object, for chaining.
 *
 * @desc Scroll to a fixed position
 * @example $('div').scrollTo( 340 );
 *
 * @desc Scroll relatively to the actual position
 * @example $('div').scrollTo( '+=340px', { axis:'y' } );
 *
 * @dec Scroll using a selector (relative to the scrolled element)
 * @example $('div').scrollTo( 'p.paragraph:eq(2)', 500, { easing:'swing', queue:true, axis:'xy' } );
 *
 * @ Scroll to a DOM element (same for jQuery object)
 * @example var second_child = document.getElementById('container').firstChild.nextSibling;
 *			$('#container').scrollTo( second_child, { duration:500, axis:'x', onAfter:function(){
 *				alert('scrolled!!');
 *			}});
 *
 * @desc Scroll on both axes, to different values
 * @example $('div').scrollTo( { top: 300, left:'+=200' }, { axis:'xy', offset:-20 } );
 */
;(function( $ ){

	var $scrollTo = $.scrollTo = function( target, duration, settings ){
		$(window).scrollTo( target, duration, settings );
	};

	$scrollTo.defaults = {
		axis:'xy',
		duration: parseFloat($.fn.jquery) >= 1.3 ? 0 : 1
	};

	// Returns the element that needs to be animated to scroll the window.
	// Kept for backwards compatibility (specially for localScroll & serialScroll)
	$scrollTo.window = function( scope ){
		return $(window)._scrollable();
	};

	// Hack, hack, hack :)
	// Returns the real elements to scroll (supports window/iframes, documents and regular nodes)
	$.fn._scrollable = function(){
		return this.map(function(){
			var elem = this,
				isWin = !elem.nodeName || $.inArray( elem.nodeName.toLowerCase(), ['iframe','#document','html','body'] ) != -1;

				if( !isWin )
					return elem;

			var doc = (elem.contentWindow || elem).document || elem.ownerDocument || elem;

			return $.browser.safari || doc.compatMode == 'BackCompat' ?
				doc.body :
				doc.documentElement;
		});
	};

	$.fn.scrollTo = function( target, duration, settings ){
		if( typeof duration == 'object' ){
			settings = duration;
			duration = 0;
		}
		if( typeof settings == 'function' )
			settings = { onAfter:settings };

		if( target == 'max' )
			target = 9e9;

		settings = $.extend( {}, $scrollTo.defaults, settings );
		// Speed is still recognized for backwards compatibility
		duration = duration || settings.speed || settings.duration;
		// Make sure the settings are given right
		settings.queue = settings.queue && settings.axis.length > 1;

		if( settings.queue )
			// Let's keep the overall duration
			duration /= 2;
		settings.offset = both( settings.offset );
		settings.over = both( settings.over );

		return this._scrollable().each(function(){
			var elem = this,
				$elem = $(elem),
				targ = target, toff, attr = {},
				win = $elem.is('html,body');

			switch( typeof targ ){
				// A number will pass the regex
				case 'number':
				case 'string':
					if( /^([+-]=)?\d+(\.\d+)?(px|%)?$/.test(targ) ){
						targ = both( targ );
						// We are done
						break;
					}
					// Relative selector, no break!
					targ = $(targ,this);
				case 'object':
					// DOMElement / jQuery
					if( targ.is || targ.style )
						// Get the real position of the target
						toff = (targ = $(targ)).offset();
			}
			$.each( settings.axis.split(''), function( i, axis ){
				var Pos	= axis == 'x' ? 'Left' : 'Top',
					pos = Pos.toLowerCase(),
					key = 'scroll' + Pos,
					old = elem[key],
					max = $scrollTo.max(elem, axis);

				if( toff ){// jQuery / DOMElement
					attr[key] = toff[pos] + ( win ? 0 : old - $elem.offset()[pos] );

					// If it's a dom element, reduce the margin
					if( settings.margin ){
						attr[key] -= parseInt(targ.css('margin'+Pos)) || 0;
						attr[key] -= parseInt(targ.css('border'+Pos+'Width')) || 0;
					}

					attr[key] += settings.offset[pos] || 0;

					if( settings.over[pos] )
						// Scroll to a fraction of its width/height
						attr[key] += targ[axis=='x'?'width':'height']() * settings.over[pos];
				}else{
					var val = targ[pos];
					// Handle percentage values
					attr[key] = val.slice && val.slice(-1) == '%' ?
						parseFloat(val) / 100 * max
						: val;
				}

				// Number or 'number'
				if( /^\d+$/.test(attr[key]) )
					// Check the limits
					attr[key] = attr[key] <= 0 ? 0 : Math.min( attr[key], max );

				// Queueing axes
				if( !i && settings.queue ){
					// Don't waste time animating, if there's no need.
					if( old != attr[key] )
						// Intermediate animation
						animate( settings.onAfterFirst );
					// Don't animate this axis again in the next iteration.
					delete attr[key];
				}
			});

			animate( settings.onAfter );

			function animate( callback ){
				$elem.animate( attr, duration, settings.easing, callback && function(){
					callback.call(this, target, settings);
				});
			};

		}).end();
	};

	// Max scrolling position, works on quirks mode
	// It only fails (not too badly) on IE, quirks mode.
	$scrollTo.max = function( elem, axis ){
		var Dim = axis == 'x' ? 'Width' : 'Height',
			scroll = 'scroll'+Dim;

		if( !$(elem).is('html,body') )
			return elem[scroll] - $(elem)[Dim.toLowerCase()]();

		var size = 'client' + Dim,
			html = elem.ownerDocument.documentElement,
			body = elem.ownerDocument.body;

		return Math.max( html[scroll], body[scroll] )
			 - Math.min( html[size]  , body[size]   );

	};

	function both( val ){
		return typeof val == 'object' ? val : { top:val, left:val };
	};

})( jQuery );

/**
 * jQuery.LocalScroll
 * Copyright (c) 2007-2009 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
 * Dual licensed under MIT and GPL.
 * Date: 3/11/2009
 *
 * @projectDescription Animated scrolling navigation, using anchors.
 * http://flesler.blogspot.com/2007/10/jquerylocalscroll-10.html
 * @author Ariel Flesler
 * @version 1.2.7
 *
 * @id jQuery.fn.localScroll
 * @param {Object} settings Hash of settings, it is passed in to jQuery.ScrollTo, none is required.
 * @return {jQuery} Returns the same jQuery object, for chaining.
 *
 * @example $('ul.links').localScroll();
 *
 * @example $('ul.links').localScroll({ filter:'.animated', duration:400, axis:'x' });
 *
 * @example $.localScroll({ target:'#pane', axis:'xy', queue:true, event:'mouseover' });
 *
 * Notes:
 *  - The plugin requires jQuery.ScrollTo.
 *  - The hash of settings, is passed to jQuery.ScrollTo, so the settings are valid for that plugin as well.
 *  - jQuery.localScroll can be used if the desired links, are all over the document, it accepts the same settings.
 *  - If the setting 'lazy' is set to true, then the binding will still work for later added anchors.
  * - If onBefore returns false, the event is ignored.
 **/
;(function( $ ){
  var URI = location.href.replace(/#.*/,''); // local url without hash

  var $localScroll = $.localScroll = function( settings ){
    $('body').localScroll( settings );
  };

  // Many of these defaults, belong to jQuery.ScrollTo, check it's demo for an example of each option.
  // @see http://flesler.demos.com/jquery/scrollTo/
  // The defaults are public and can be overriden.
  $localScroll.defaults = {
    duration:1000, // How long to animate.
    axis:'y', // Which of top and left should be modified.
    event:'click', // On which event to react.
    stop:true, // Avoid queuing animations
    target: window, // What to scroll (selector or element). The whole window by default.
    reset: true // Used by $.localScroll.hash. If true, elements' scroll is resetted before actual scrolling
    /*
    lock:false, // ignore events if already animating
    lazy:false, // if true, links can be added later, and will still work.
    filter:null, // filter some anchors out of the matched elements.
    hash: false // if true, the hash of the selected link, will appear on the address bar.
    */
  };

  // If the URL contains a hash, it will scroll to the pointed element
  $localScroll.hash = function( settings ){
    if( location.hash ){
      settings = $.extend( {}, $localScroll.defaults, settings );
      settings.hash = false; // can't be true

      if( settings.reset ){
        var d = settings.duration;
        delete settings.duration;
        $(settings.target).scrollTo( 0, settings );
        settings.duration = d;
      }
      scroll( 0, location, settings );
    }
  };

  $.fn.localScroll = function( settings ){
    settings = $.extend( {}, $localScroll.defaults, settings );

    return settings.lazy ?
      // use event delegation, more links can be added later.
      this.bind( settings.event, function( e ){
        // Could use closest(), but that would leave out jQuery -1.3.x
        var a = $([e.target, e.target.parentNode]).filter(filter)[0];
        // if a valid link was clicked
        if( a )
          scroll( e, a, settings ); // do scroll.
      }) :
      // bind concretely, to each matching link
      this.find('a,area')
        .filter( filter ).bind( settings.event, function(e){
          scroll( e, this, settings );
        }).end()
      .end();

    function filter(){// is this a link that points to an anchor and passes a possible filter ? href is checked to avoid a bug in FF.
      return !!this.href && !!this.hash && this.href.replace(this.hash,'') == URI && (!settings.filter || $(this).is( settings.filter ));
    };
  };

  function scroll( e, link, settings ){
    var id = link.hash.slice(1),
      elem = document.getElementById(id) || document.getElementsByName(id)[0];

    if ( !elem )
      return;

    if( e )
      e.preventDefault();

    var $target = $( settings.target );

    if( settings.lock && $target.is(':animated') ||
      settings.onBefore && settings.onBefore.call(settings, e, elem, $target) === false )
      return;

    if( settings.stop )
      $target.stop(true); // remove all its animations

    if( settings.hash ){
      var attr = elem.id == id ? 'id' : 'name',
        $a = $('<a> </a>').attr(attr, id).css({
          position:'absolute',
          top: $(window).scrollTop(),
          left: $(window).scrollLeft()
        });

      elem[attr] = '';
      $('body').prepend($a);
      location = link.hash;
      $a.remove();
      elem[attr] = id;
    }

    $target
      .scrollTo( elem, settings ) // do scroll
      .trigger('notify.serialScroll',[elem]); // notify serialScroll about this change
  };

})( jQuery );