/*!
 * jQuery UI 1.8.6
 *
 * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://jquery.org/license
 *
 * http://docs.jquery.com/UI
 */
(function( $, undefined ) {

// prevent duplicate loading
// this is only a problem because we proxy existing functions
// and we don't want to double proxy them
$.ui = $.ui || {};
if ( $.ui.version ) {
	return;
}

$.extend( $.ui, {
	version: "1.8.6",

	keyCode: {
		ALT: 18,
		BACKSPACE: 8,
		CAPS_LOCK: 20,
		COMMA: 188,
		COMMAND: 91,
		COMMAND_LEFT: 91, // COMMAND
		COMMAND_RIGHT: 93,
		CONTROL: 17,
		DELETE: 46,
		DOWN: 40,
		END: 35,
		ENTER: 13,
		ESCAPE: 27,
		HOME: 36,
		INSERT: 45,
		LEFT: 37,
		MENU: 93, // COMMAND_RIGHT
		NUMPAD_ADD: 107,
		NUMPAD_DECIMAL: 110,
		NUMPAD_DIVIDE: 111,
		NUMPAD_ENTER: 108,
		NUMPAD_MULTIPLY: 106,
		NUMPAD_SUBTRACT: 109,
		PAGE_DOWN: 34,
		PAGE_UP: 33,
		PERIOD: 190,
		RIGHT: 39,
		SHIFT: 16,
		SPACE: 32,
		TAB: 9,
		UP: 38,
		WINDOWS: 91 // COMMAND
	}
});

// plugins
$.fn.extend({
	_focus: $.fn.focus,
	focus: function( delay, fn ) {
		return typeof delay === "number" ?
			this.each(function() {
				var elem = this;
				setTimeout(function() {
					$( elem ).focus();
					if ( fn ) {
						fn.call( elem );
					}
				}, delay );
			}) :
			this._focus.apply( this, arguments );
	},

	scrollParent: function() {
		var scrollParent;
		if (($.browser.msie && (/(static|relative)/).test(this.css('position'))) || (/absolute/).test(this.css('position'))) {
			scrollParent = this.parents().filter(function() {
				return (/(relative|absolute|fixed)/).test($.curCSS(this,'position',1)) && (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
			}).eq(0);
		} else {
			scrollParent = this.parents().filter(function() {
				return (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
			}).eq(0);
		}

		return (/fixed/).test(this.css('position')) || !scrollParent.length ? $(document) : scrollParent;
	},

	zIndex: function( zIndex ) {
		if ( zIndex !== undefined ) {
			return this.css( "zIndex", zIndex );
		}

		if ( this.length ) {
			var elem = $( this[ 0 ] ), position, value;
			while ( elem.length && elem[ 0 ] !== document ) {
				// Ignore z-index if position is set to a value where z-index is ignored by the browser
				// This makes behavior of this function consistent across browsers
				// WebKit always returns auto if the element is positioned
				position = elem.css( "position" );
				if ( position === "absolute" || position === "relative" || position === "fixed" ) {
					// IE returns 0 when zIndex is not specified
					// other browsers return a string
					// we ignore the case of nested elements with an explicit value of 0
					// <div style="z-index: -10;"><div style="z-index: 0;"></div></div>
					value = parseInt( elem.css( "zIndex" ), 10 );
					if ( !isNaN( value ) && value !== 0 ) {
						return value;
					}
				}
				elem = elem.parent();
			}
		}

		return 0;
	},

	disableSelection: function() {
		return this.bind( ( $.support.selectstart ? "selectstart" : "mousedown" ) +
			".ui-disableSelection", function( event ) {
				event.preventDefault();
			});
	},

	enableSelection: function() {
		return this.unbind( ".ui-disableSelection" );
	}
});

$.each( [ "Width", "Height" ], function( i, name ) {
	var side = name === "Width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ],
		type = name.toLowerCase(),
		orig = {
			innerWidth: $.fn.innerWidth,
			innerHeight: $.fn.innerHeight,
			outerWidth: $.fn.outerWidth,
			outerHeight: $.fn.outerHeight
		};

	function reduce( elem, size, border, margin ) {
		$.each( side, function() {
			size -= parseFloat( $.curCSS( elem, "padding" + this, true) ) || 0;
			if ( border ) {
				size -= parseFloat( $.curCSS( elem, "border" + this + "Width", true) ) || 0;
			}
			if ( margin ) {
				size -= parseFloat( $.curCSS( elem, "margin" + this, true) ) || 0;
			}
		});
		return size;
	}

	$.fn[ "inner" + name ] = function( size ) {
		if ( size === undefined ) {
			return orig[ "inner" + name ].call( this );
		}

		return this.each(function() {
			$( this ).css( type, reduce( this, size ) + "px" );
		});
	};

	$.fn[ "outer" + name] = function( size, margin ) {
		if ( typeof size !== "number" ) {
			return orig[ "outer" + name ].call( this, size );
		}

		return this.each(function() {
			$( this).css( type, reduce( this, size, true, margin ) + "px" );
		});
	};
});

// selectors
function visible( element ) {
	return !$( element ).parents().andSelf().filter(function() {
		return $.curCSS( this, "visibility" ) === "hidden" ||
			$.expr.filters.hidden( this );
	}).length;
}

$.extend( $.expr[ ":" ], {
	data: function( elem, i, match ) {
		return !!$.data( elem, match[ 3 ] );
	},

	focusable: function( element ) {
		var nodeName = element.nodeName.toLowerCase(),
			tabIndex = $.attr( element, "tabindex" );
		if ( "area" === nodeName ) {
			var map = element.parentNode,
				mapName = map.name,
				img;
			if ( !element.href || !mapName || map.nodeName.toLowerCase() !== "map" ) {
				return false;
			}
			img = $( "img[usemap=#" + mapName + "]" )[0];
			return !!img && visible( img );
		}
		return ( /input|select|textarea|button|object/.test( nodeName )
			? !element.disabled
			: "a" == nodeName
				? element.href || !isNaN( tabIndex )
				: !isNaN( tabIndex ))
			// the element and all of its ancestors must be visible
			&& visible( element );
	},

	tabbable: function( element ) {
		var tabIndex = $.attr( element, "tabindex" );
		return ( isNaN( tabIndex ) || tabIndex >= 0 ) && $( element ).is( ":focusable" );
	}
});

// support
$(function() {
	var body = document.body,
		div = body.appendChild( div = document.createElement( "div" ) );

	$.extend( div.style, {
		minHeight: "100px",
		height: "auto",
		padding: 0,
		borderWidth: 0
	});

	$.support.minHeight = div.offsetHeight === 100;
	$.support.selectstart = "onselectstart" in div;

	// set display to none to avoid a layout bug in IE
	// http://dev.jquery.com/ticket/4014
	body.removeChild( div ).style.display = "none";
});





// deprecated
$.extend( $.ui, {
	// $.ui.plugin is deprecated.  Use the proxy pattern instead.
	plugin: {
		add: function( module, option, set ) {
			var proto = $.ui[ module ].prototype;
			for ( var i in set ) {
				proto.plugins[ i ] = proto.plugins[ i ] || [];
				proto.plugins[ i ].push( [ option, set[ i ] ] );
			}
		},
		call: function( instance, name, args ) {
			var set = instance.plugins[ name ];
			if ( !set || !instance.element[ 0 ].parentNode ) {
				return;
			}
	
			for ( var i = 0; i < set.length; i++ ) {
				if ( instance.options[ set[ i ][ 0 ] ] ) {
					set[ i ][ 1 ].apply( instance.element, args );
				}
			}
		}
	},
	
	// will be deprecated when we switch to jQuery 1.4 - use jQuery.contains()
	contains: function( a, b ) {
		return document.compareDocumentPosition ?
			a.compareDocumentPosition( b ) & 16 :
			a !== b && a.contains( b );
	},
	
	// only used by resizable
	hasScroll: function( el, a ) {
	
		//If overflow is hidden, the element might have extra content, but the user wants to hide it
		if ( $( el ).css( "overflow" ) === "hidden") {
			return false;
		}
	
		var scroll = ( a && a === "left" ) ? "scrollLeft" : "scrollTop",
			has = false;
	
		if ( el[ scroll ] > 0 ) {
			return true;
		}
	
		// TODO: determine which cases actually cause this to happen
		// if the element doesn't have the scroll set, see if it's possible to
		// set the scroll
		el[ scroll ] = 1;
		has = ( el[ scroll ] > 0 );
		el[ scroll ] = 0;
		return has;
	},
	
	// these are odd functions, fix the API or move into individual plugins
	isOverAxis: function( x, reference, size ) {
		//Determines when x coordinate is over "b" element axis
		return ( x > reference ) && ( x < ( reference + size ) );
	},
	isOver: function( y, x, top, left, height, width ) {
		//Determines when x, y coordinates is over "b" element
		return $.ui.isOverAxis( y, top, height ) && $.ui.isOverAxis( x, left, width );
	}
});

})( jQuery );
/*!
 * jQuery UI Widget 1.8.6
 *
 * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://jquery.org/license
 *
 * http://docs.jquery.com/UI/Widget
 */
(function( $, undefined ) {

// jQuery 1.4+
if ( $.cleanData ) {
	var _cleanData = $.cleanData;
	$.cleanData = function( elems ) {
		for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) {
			$( elem ).triggerHandler( "remove" );
		}
		_cleanData( elems );
	};
} else {
	var _remove = $.fn.remove;
	$.fn.remove = function( selector, keepData ) {
		return this.each(function() {
			if ( !keepData ) {
				if ( !selector || $.filter( selector, [ this ] ).length ) {
					$( "*", this ).add( [ this ] ).each(function() {
						$( this ).triggerHandler( "remove" );
					});
				}
			}
			return _remove.call( $(this), selector, keepData );
		});
	};
}

$.widget = function( name, base, prototype ) {
	var namespace = name.split( "." )[ 0 ],
		fullName;
	name = name.split( "." )[ 1 ];
	fullName = namespace + "-" + name;

	if ( !prototype ) {
		prototype = base;
		base = $.Widget;
	}

	// create selector for plugin
	$.expr[ ":" ][ fullName ] = function( elem ) {
		return !!$.data( elem, name );
	};

	$[ namespace ] = $[ namespace ] || {};
	$[ namespace ][ name ] = function( options, element ) {
		// allow instantiation without initializing for simple inheritance
		if ( arguments.length ) {
			this._createWidget( options, element );
		}
	};

	var basePrototype = new base();
	// we need to make the options hash a property directly on the new instance
	// otherwise we'll modify the options hash on the prototype that we're
	// inheriting from
//	$.each( basePrototype, function( key, val ) {
//		if ( $.isPlainObject(val) ) {
//			basePrototype[ key ] = $.extend( {}, val );
//		}
//	});
	basePrototype.options = $.extend( true, {}, basePrototype.options );
	$[ namespace ][ name ].prototype = $.extend( true, basePrototype, {
		namespace: namespace,
		widgetName: name,
		widgetEventPrefix: $[ namespace ][ name ].prototype.widgetEventPrefix || name,
		widgetBaseClass: fullName
	}, prototype );

	$.widget.bridge( name, $[ namespace ][ name ] );
};

$.widget.bridge = function( name, object ) {
	$.fn[ name ] = function( options ) {
		var isMethodCall = typeof options === "string",
			args = Array.prototype.slice.call( arguments, 1 ),
			returnValue = this;

		// allow multiple hashes to be passed on init
		options = !isMethodCall && args.length ?
			$.extend.apply( null, [ true, options ].concat(args) ) :
			options;

		// prevent calls to internal methods
		if ( isMethodCall && options.charAt( 0 ) === "_" ) {
			return returnValue;
		}

		if ( isMethodCall ) {
			this.each(function() {
				var instance = $.data( this, name ),
					methodValue = instance && $.isFunction( instance[options] ) ?
						instance[ options ].apply( instance, args ) :
						instance;
				// TODO: add this back in 1.9 and use $.error() (see #5972)
//				if ( !instance ) {
//					throw "cannot call methods on " + name + " prior to initialization; " +
//						"attempted to call method '" + options + "'";
//				}
//				if ( !$.isFunction( instance[options] ) ) {
//					throw "no such method '" + options + "' for " + name + " widget instance";
//				}
//				var methodValue = instance[ options ].apply( instance, args );
				if ( methodValue !== instance && methodValue !== undefined ) {
					returnValue = methodValue;
					return false;
				}
			});
		} else {
			this.each(function() {
				var instance = $.data( this, name );
				if ( instance ) {
					instance.option( options || {} )._init();
				} else {
					$.data( this, name, new object( options, this ) );
				}
			});
		}

		return returnValue;
	};
};

$.Widget = function( options, element ) {
	// allow instantiation without initializing for simple inheritance
	if ( arguments.length ) {
		this._createWidget( options, element );
	}
};

$.Widget.prototype = {
	widgetName: "widget",
	widgetEventPrefix: "",
	options: {
		disabled: false
	},
	_createWidget: function( options, element ) {
		// $.widget.bridge stores the plugin instance, but we do it anyway
		// so that it's stored even before the _create function runs
		$.data( element, this.widgetName, this );
		this.element = $( element );
		this.options = $.extend( true, {},
			this.options,
			this._getCreateOptions(),
			options );

		var self = this;
		this.element.bind( "remove." + this.widgetName, function() {
			self.destroy();
		});

		this._create();
		this._trigger( "create" );
		this._init();
	},
	_getCreateOptions: function() {
		return $.metadata && $.metadata.get( this.element[0] )[ this.widgetName ];
	},
	_create: function() {},
	_init: function() {},

	destroy: function() {
		this.element
			.unbind( "." + this.widgetName )
			.removeData( this.widgetName );
		this.widget()
			.unbind( "." + this.widgetName )
			.removeAttr( "aria-disabled" )
			.removeClass(
				this.widgetBaseClass + "-disabled " +
				"ui-state-disabled" );
	},

	widget: function() {
		return this.element;
	},

	option: function( key, value ) {
		var options = key;

		if ( arguments.length === 0 ) {
			// don't return a reference to the internal hash
			return $.extend( {}, this.options );
		}

		if  (typeof key === "string" ) {
			if ( value === undefined ) {
				return this.options[ key ];
			}
			options = {};
			options[ key ] = value;
		}

		this._setOptions( options );

		return this;
	},
	_setOptions: function( options ) {
		var self = this;
		$.each( options, function( key, value ) {
			self._setOption( key, value );
		});

		return this;
	},
	_setOption: function( key, value ) {
		this.options[ key ] = value;

		if ( key === "disabled" ) {
			this.widget()
				[ value ? "addClass" : "removeClass"](
					this.widgetBaseClass + "-disabled" + " " +
					"ui-state-disabled" )
				.attr( "aria-disabled", value );
		}

		return this;
	},

	enable: function() {
		return this._setOption( "disabled", false );
	},
	disable: function() {
		return this._setOption( "disabled", true );
	},

	_trigger: function( type, event, data ) {
		var callback = this.options[ type ];

		event = $.Event( event );
		event.type = ( type === this.widgetEventPrefix ?
			type :
			this.widgetEventPrefix + type ).toLowerCase();
		data = data || {};

		// copy original event properties over to the new event
		// this would happen if we could call $.event.fix instead of $.Event
		// but we don't have a way to force an event to be fixed multiple times
		if ( event.originalEvent ) {
			for ( var i = $.event.props.length, prop; i; ) {
				prop = $.event.props[ --i ];
				event[ prop ] = event.originalEvent[ prop ];
			}
		}

		this.element.trigger( event, data );

		return !( $.isFunction(callback) &&
			callback.call( this.element[0], event, data ) === false ||
			event.isDefaultPrevented() );
	}
};

})( jQuery );
/*
 * jQuery UI Accordion 1.8.6
 *
 * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://jquery.org/license
 *
 * http://docs.jquery.com/UI/Accordion
 *
 * Depends:
 *	jquery.ui.core.js
 *	jquery.ui.widget.js
 */
(function( $, undefined ) {

$.widget( "ui.accordion", {
	options: {
		active: 0,
		animated: "slide",
		autoHeight: true,
		clearStyle: false,
		collapsible: false,
		event: "click",
		fillSpace: false,
		header: "> li > :first-child,> :not(li):even",
		icons: {
			header: "ui-icon-triangle-1-e",
			headerSelected: "ui-icon-triangle-1-s"
		},
		navigation: false,
		navigationFilter: function() {
			return this.href.toLowerCase() === location.href.toLowerCase();
		}
	},

	_create: function() {
		var self = this,
			options = self.options;

		self.running = 0;

		self.element
			.addClass( "ui-accordion ui-widget ui-helper-reset" )
			// in lack of child-selectors in CSS
			// we need to mark top-LIs in a UL-accordion for some IE-fix
			.children( "li" )
				.addClass( "ui-accordion-li-fix" );

		self.headers = self.element.find( options.header )
			.addClass( "ui-accordion-header ui-helper-reset ui-state-default ui-corner-all" )
			.bind( "mouseenter.accordion", function() {
				if ( options.disabled ) {
					return;
				}
				$( this ).addClass( "ui-state-hover" );
			})
			.bind( "mouseleave.accordion", function() {
				if ( options.disabled ) {
					return;
				}
				$( this ).removeClass( "ui-state-hover" );
			})
			.bind( "focus.accordion", function() {
				if ( options.disabled ) {
					return;
				}
				$( this ).addClass( "ui-state-focus" );
			})
			.bind( "blur.accordion", function() {
				if ( options.disabled ) {
					return;
				}
				$( this ).removeClass( "ui-state-focus" );
			});

		self.headers.next()
			.addClass( "ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom" );

		if ( options.navigation ) {
			var current = self.element.find( "a" ).filter( options.navigationFilter ).eq( 0 );
			if ( current.length ) {
				var header = current.closest( ".ui-accordion-header" );
				if ( header.length ) {
					// anchor within header
					self.active = header;
				} else {
					// anchor within content
					self.active = current.closest( ".ui-accordion-content" ).prev();
				}
			}
		}

		self.active = self._findActive( self.active || options.active )
			.addClass( "ui-state-default ui-state-active" )
			.toggleClass( "ui-corner-all" )
			.toggleClass( "ui-corner-top" );
		self.active.next().addClass( "ui-accordion-content-active" );

		self._createIcons();
		self.resize();
		
		// ARIA
		self.element.attr( "role", "tablist" );

		self.headers
			.attr( "role", "tab" )
			.bind( "keydown.accordion", function( event ) {
				return self._keydown( event );
			})
			.next()
				.attr( "role", "tabpanel" );

		self.headers
			.not( self.active || "" )
			.attr({
				"aria-expanded": "false",
				tabIndex: -1
			})
			.next()
				.hide();

		// make sure at least one header is in the tab order
		if ( !self.active.length ) {
			self.headers.eq( 0 ).attr( "tabIndex", 0 );
		} else {
			self.active
				.attr({
					"aria-expanded": "true",
					tabIndex: 0
				});
		}

		// only need links in tab order for Safari
		if ( !$.browser.safari ) {
			self.headers.find( "a" ).attr( "tabIndex", -1 );
		}

		if ( options.event ) {
			self.headers.bind( options.event.split(" ").join(".accordion ") + ".accordion", function(event) {
				self._clickHandler.call( self, event, this );
				event.preventDefault();
			});
		}
	},

	_createIcons: function() {
		var options = this.options;
		if ( options.icons ) {
			$( "<span></span>" )
				.addClass( "ui-icon " + options.icons.header )
				.prependTo( this.headers );
			this.active.children( ".ui-icon" )
				.toggleClass(options.icons.header)
				.toggleClass(options.icons.headerSelected);
			this.element.addClass( "ui-accordion-icons" );
		}
	},

	_destroyIcons: function() {
		this.headers.children( ".ui-icon" ).remove();
		this.element.removeClass( "ui-accordion-icons" );
	},

	destroy: function() {
		var options = this.options;

		this.element
			.removeClass( "ui-accordion ui-widget ui-helper-reset" )
			.removeAttr( "role" );

		this.headers
			.unbind( ".accordion" )
			.removeClass( "ui-accordion-header ui-accordion-disabled ui-helper-reset ui-state-default ui-corner-all ui-state-active ui-state-disabled ui-corner-top" )
			.removeAttr( "role" )
			.removeAttr( "aria-expanded" )
			.removeAttr( "tabIndex" );

		this.headers.find( "a" ).removeAttr( "tabIndex" );
		this._destroyIcons();
		var contents = this.headers.next()
			.css( "display", "" )
			.removeAttr( "role" )
			.removeClass( "ui-helper-reset ui-widget-content ui-corner-bottom ui-accordion-content ui-accordion-content-active ui-accordion-disabled ui-state-disabled" );
		if ( options.autoHeight || options.fillHeight ) {
			contents.css( "height", "" );
		}

		return $.Widget.prototype.destroy.call( this );
	},

	_setOption: function( key, value ) {
		$.Widget.prototype._setOption.apply( this, arguments );
			
		if ( key == "active" ) {
			this.activate( value );
		}
		if ( key == "icons" ) {
			this._destroyIcons();
			if ( value ) {
				this._createIcons();
			}
		}
		// #5332 - opacity doesn't cascade to positioned elements in IE
		// so we need to add the disabled class to the headers and panels
		if ( key == "disabled" ) {
			this.headers.add(this.headers.next())
				[ value ? "addClass" : "removeClass" ](
					"ui-accordion-disabled ui-state-disabled" );
		}
	},

	_keydown: function( event ) {
		if ( this.options.disabled || event.altKey || event.ctrlKey ) {
			return;
		}

		var keyCode = $.ui.keyCode,
			length = this.headers.length,
			currentIndex = this.headers.index( event.target ),
			toFocus = false;

		switch ( event.keyCode ) {
			case keyCode.RIGHT:
			case keyCode.DOWN:
				toFocus = this.headers[ ( currentIndex + 1 ) % length ];
				break;
			case keyCode.LEFT:
			case keyCode.UP:
				toFocus = this.headers[ ( currentIndex - 1 + length ) % length ];
				break;
			case keyCode.SPACE:
			case keyCode.ENTER:
				this._clickHandler( { target: event.target }, event.target );
				event.preventDefault();
		}

		if ( toFocus ) {
			$( event.target ).attr( "tabIndex", -1 );
			$( toFocus ).attr( "tabIndex", 0 );
			toFocus.focus();
			return false;
		}

		return true;
	},

	resize: function() {
		var options = this.options,
			maxHeight;

		if ( options.fillSpace ) {
			if ( $.browser.msie ) {
				var defOverflow = this.element.parent().css( "overflow" );
				this.element.parent().css( "overflow", "hidden");
			}
			maxHeight = this.element.parent().height();
			if ($.browser.msie) {
				this.element.parent().css( "overflow", defOverflow );
			}

			this.headers.each(function() {
				maxHeight -= $( this ).outerHeight( true );
			});

			this.headers.next()
				.each(function() {
					$( this ).height( Math.max( 0, maxHeight -
						$( this ).innerHeight() + $( this ).height() ) );
				})
				.css( "overflow", "auto" );
		} else if ( options.autoHeight ) {
			maxHeight = 0;
			this.headers.next()
				.each(function() {
					maxHeight = Math.max( maxHeight, $( this ).height( "" ).height() );
				})
				.height( maxHeight );
		}

		return this;
	},

	activate: function( index ) {
		// TODO this gets called on init, changing the option without an explicit call for that
		this.options.active = index;
		// call clickHandler with custom event
		var active = this._findActive( index )[ 0 ];
		this._clickHandler( { target: active }, active );

		return this;
	},

	_findActive: function( selector ) {
		return selector
			? typeof selector === "number"
				? this.headers.filter( ":eq(" + selector + ")" )
				: this.headers.not( this.headers.not( selector ) )
			: selector === false
				? $( [] )
				: this.headers.filter( ":eq(0)" );
	},

	// TODO isn't event.target enough? why the separate target argument?
	_clickHandler: function( event, target ) {
		var options = this.options;
		if ( options.disabled ) {
			return;
		}

		// called only when using activate(false) to close all parts programmatically
		if ( !event.target ) {
			if ( !options.collapsible ) {
				return;
			}
			this.active
				.removeClass( "ui-state-active ui-corner-top" )
				.addClass( "ui-state-default ui-corner-all" )
				.children( ".ui-icon" )
					.removeClass( options.icons.headerSelected )
					.addClass( options.icons.header );
			this.active.next().addClass( "ui-accordion-content-active" );
			var toHide = this.active.next(),
				data = {
					options: options,
					newHeader: $( [] ),
					oldHeader: options.active,
					newContent: $( [] ),
					oldContent: toHide
				},
				toShow = ( this.active = $( [] ) );
			this._toggle( toShow, toHide, data );
			return;
		}

		// get the click target
		var clicked = $( event.currentTarget || target ),
			clickedIsActive = clicked[0] === this.active[0];

		// TODO the option is changed, is that correct?
		// TODO if it is correct, shouldn't that happen after determining that the click is valid?
		options.active = options.collapsible && clickedIsActive ?
			false :
			this.headers.index( clicked );

		// if animations are still active, or the active header is the target, ignore click
		if ( this.running || ( !options.collapsible && clickedIsActive ) ) {
			return;
		}

		// switch classes
		this.active
			.removeClass( "ui-state-active ui-corner-top" )
			.addClass( "ui-state-default ui-corner-all" )
			.children( ".ui-icon" )
				.removeClass( options.icons.headerSelected )
				.addClass( options.icons.header );
		if ( !clickedIsActive ) {
			clicked
				.removeClass( "ui-state-default ui-corner-all" )
				.addClass( "ui-state-active ui-corner-top" )
				.children( ".ui-icon" )
					.removeClass( options.icons.header )
					.addClass( options.icons.headerSelected );
			clicked
				.next()
				.addClass( "ui-accordion-content-active" );
		}

		// find elements to show and hide
		var toShow = clicked.next(),
			toHide = this.active.next(),
			data = {
				options: options,
				newHeader: clickedIsActive && options.collapsible ? $([]) : clicked,
				oldHeader: this.active,
				newContent: clickedIsActive && options.collapsible ? $([]) : toShow,
				oldContent: toHide
			},
			down = this.headers.index( this.active[0] ) > this.headers.index( clicked[0] );

		this.active = clickedIsActive ? $([]) : clicked;
		this._toggle( toShow, toHide, data, clickedIsActive, down );

		return;
	},

	_toggle: function( toShow, toHide, data, clickedIsActive, down ) {
		var self = this,
			options = self.options;

		self.toShow = toShow;
		self.toHide = toHide;
		self.data = data;

		var complete = function() {
			if ( !self ) {
				return;
			}
			return self._completed.apply( self, arguments );
		};

		// trigger changestart event
		self._trigger( "changestart", null, self.data );

		// count elements to animate
		self.running = toHide.size() === 0 ? toShow.size() : toHide.size();

		if ( options.animated ) {
			var animOptions = {};

			if ( options.collapsible && clickedIsActive ) {
				animOptions = {
					toShow: $( [] ),
					toHide: toHide,
					complete: complete,
					down: down,
					autoHeight: options.autoHeight || options.fillSpace
				};
			} else {
				animOptions = {
					toShow: toShow,
					toHide: toHide,
					complete: complete,
					down: down,
					autoHeight: options.autoHeight || options.fillSpace
				};
			}

			if ( !options.proxied ) {
				options.proxied = options.animated;
			}

			if ( !options.proxiedDuration ) {
				options.proxiedDuration = options.duration;
			}

			options.animated = $.isFunction( options.proxied ) ?
				options.proxied( animOptions ) :
				options.proxied;

			options.duration = $.isFunction( options.proxiedDuration ) ?
				options.proxiedDuration( animOptions ) :
				options.proxiedDuration;

			var animations = $.ui.accordion.animations,
				duration = options.duration,
				easing = options.animated;

			if ( easing && !animations[ easing ] && !$.easing[ easing ] ) {
				easing = "slide";
			}
			if ( !animations[ easing ] ) {
				animations[ easing ] = function( options ) {
					this.slide( options, {
						easing: easing,
						duration: duration || 700
					});
				};
			}

			animations[ easing ]( animOptions );
		} else {
			if ( options.collapsible && clickedIsActive ) {
				toShow.toggle();
			} else {
				toHide.hide();
				toShow.show();
			}

			complete( true );
		}

		// TODO assert that the blur and focus triggers are really necessary, remove otherwise
		toHide.prev()
			.attr({
				"aria-expanded": "false",
				tabIndex: -1
			})
			.blur();
		toShow.prev()
			.attr({
				"aria-expanded": "true",
				tabIndex: 0
			})
			.focus();
	},

	_completed: function( cancel ) {
		this.running = cancel ? 0 : --this.running;
		if ( this.running ) {
			return;
		}

		if ( this.options.clearStyle ) {
			this.toShow.add( this.toHide ).css({
				height: "",
				overflow: ""
			});
		}

		// other classes are removed before the animation; this one needs to stay until completed
		this.toHide.removeClass( "ui-accordion-content-active" );

		this._trigger( "change", null, this.data );
	}
});

$.extend( $.ui.accordion, {
	version: "1.8.6",
	animations: {
		slide: function( options, additions ) {
			options = $.extend({
				easing: "swing",
				duration: 300
			}, options, additions );
			if ( !options.toHide.size() ) {
				options.toShow.animate({
					height: "show",
					paddingTop: "show",
					paddingBottom: "show"
				}, options );
				return;
			}
			if ( !options.toShow.size() ) {
				options.toHide.animate({
					height: "hide",
					paddingTop: "hide",
					paddingBottom: "hide"
				}, options );
				return;
			}
			var overflow = options.toShow.css( "overflow" ),
				percentDone = 0,
				showProps = {},
				hideProps = {},
				fxAttrs = [ "height", "paddingTop", "paddingBottom" ],
				originalWidth;
			// fix width before calculating height of hidden element
			var s = options.toShow;
			originalWidth = s[0].style.width;
			s.width( parseInt( s.parent().width(), 10 )
				- parseInt( s.css( "paddingLeft" ), 10 )
				- parseInt( s.css( "paddingRight" ), 10 )
				- ( parseInt( s.css( "borderLeftWidth" ), 10 ) || 0 )
				- ( parseInt( s.css( "borderRightWidth" ), 10) || 0 ) );

			$.each( fxAttrs, function( i, prop ) {
				hideProps[ prop ] = "hide";

				var parts = ( "" + $.css( options.toShow[0], prop ) ).match( /^([\d+-.]+)(.*)$/ );
				showProps[ prop ] = {
					value: parts[ 1 ],
					unit: parts[ 2 ] || "px"
				};
			});
			options.toShow.css({ height: 0, overflow: "hidden" }).show();
			options.toHide
				.filter( ":hidden" )
					.each( options.complete )
				.end()
				.filter( ":visible" )
				.animate( hideProps, {
				step: function( now, settings ) {
					// only calculate the percent when animating height
					// IE gets very inconsistent results when animating elements
					// with small values, which is common for padding
					if ( settings.prop == "height" ) {
						percentDone = ( settings.end - settings.start === 0 ) ? 0 :
							( settings.now - settings.start ) / ( settings.end - settings.start );
					}

					options.toShow[ 0 ].style[ settings.prop ] =
						( percentDone * showProps[ settings.prop ].value )
						+ showProps[ settings.prop ].unit;
				},
				duration: options.duration,
				easing: options.easing,
				complete: function() {
					if ( !options.autoHeight ) {
						options.toShow.css( "height", "" );
					}
					options.toShow.css({
						width: originalWidth,
						overflow: overflow
					});
					options.complete();
				}
			});
		},
		bounceslide: function( options ) {
			this.slide( options, {
				easing: options.down ? "easeOutBounce" : "swing",
				duration: options.down ? 1000 : 200
			});
		}
	}
});

})( jQuery );