/*!
 * jQuery UI 1.8.1
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 */
;jQuery.ui || (function($) {

//Helper functions and ui object
$.ui = {
	version: "1.8.1",

	// $.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);
				}
			}
		}
	},

	contains: function(a, b) {
		return document.compareDocumentPosition
			? a.compareDocumentPosition(b) & 16
			: a !== b && a.contains(b);
	},

	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;
	},

	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);
	},

	keyCode: {
		ALT: 18,
		BACKSPACE: 8,
		CAPS_LOCK: 20,
		COMMA: 188,
		CONTROL: 17,
		DELETE: 46,
		DOWN: 40,
		END: 35,
		ENTER: 13,
		ESCAPE: 27,
		HOME: 36,
		INSERT: 45,
		LEFT: 37,
		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
	}
};

//jQuery plugins
$.fn.extend({
	_focus: $.fn.focus,
	focus: function(delay, fn) {
		return typeof delay === 'number'
			? this.each(function() {
				var elem = this;
				setTimeout(function() {
					$(elem).focus();
					(fn && fn.call(elem));
				}, delay);
			})
			: this._focus.apply(this, arguments);
	},
	
	enableSelection: function() {
		return this
			.attr('unselectable', 'off')
			.css('MozUserSelect', '');
	},

	disableSelection: function() {
		return this
			.attr('unselectable', 'on')
			.css('MozUserSelect', 'none');
	},

	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'));
					if (!isNaN(value) && value != 0) {
						return value;
					}
				}
				elem = elem.parent();
			}
		}

		return 0;
	}
});


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

	focusable: function(element) {
		var nodeName = element.nodeName.toLowerCase(),
			tabIndex = $.attr(element, 'tabindex');
		return (/input|select|textarea|button|object/.test(nodeName)
			? !element.disabled
			: 'a' == nodeName || 'area' == nodeName
				? element.href || !isNaN(tabIndex)
				: !isNaN(tabIndex))
			// the element and all of its ancestors must be visible
			// the browser may report that the area is hidden
			&& !$(element)['area' == nodeName ? 'parents' : 'closest'](':hidden').length;
	},

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

})(jQuery);
/*!
 * jQuery UI Widget 1.8.1
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Widget
 */
(function( $ ) {

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( {}, 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.substring( 0, 1 ) === "_" ) {
			return returnValue;
		}

		if ( isMethodCall ) {
			this.each(function() {
				var instance = $.data( this, name ),
					methodValue = instance && $.isFunction( instance[options] ) ?
						instance[ options ].apply( instance, args ) :
						instance;
				if ( methodValue !== instance && methodValue !== undefined ) {
					returnValue = methodValue;
					return false;
				}
			});
		} else {
			this.each(function() {
				var instance = $.data( this, name );
				if ( instance ) {
					if ( options ) {
						instance.option( options );
					}
					instance._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
		this.element = $( element ).data( this.widgetName, this );
		this.options = $.extend( true, {},
			this.options,
			$.metadata && $.metadata.get( element )[ this.widgetName ],
			options );

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

		this._create();
		this._init();
	},
	_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,
			self = this;

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

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

		$.each( options, function( key, value ) {
			self._setOption( key, value );
		});

		return self;
	},
	_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 Autocomplete 1.8.1
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Autocomplete
 *
 * Depends:
 *	jquery.ui.core.js
 *	jquery.ui.widget.js
 *	jquery.ui.position.js
 */
(function( $ ) {

$.widget( "ui.autocomplete", {
	options: {
		minLength: 1,
		delay: 300
	},
	_create: function() {
		var self = this,
			doc = this.element[ 0 ].ownerDocument;
		this.element
			.addClass( "ui-autocomplete-input" )
			.attr( "autocomplete", "off" )
			// TODO verify these actually work as intended
			.attr({
				role: "textbox",
				"aria-autocomplete": "list",
				"aria-haspopup": "true"
			})
			.bind( "keydown.autocomplete", function( event ) {
				var keyCode = $.ui.keyCode;
				switch( event.keyCode ) {
				case keyCode.PAGE_UP:
					self._move( "previousPage", event );
					break;
				case keyCode.PAGE_DOWN:
					self._move( "nextPage", event );
					break;
				case keyCode.UP:
					self._move( "previous", event );
					// prevent moving cursor to beginning of text field in some browsers
					event.preventDefault();
					break;
				case keyCode.DOWN:
					self._move( "next", event );
					// prevent moving cursor to end of text field in some browsers
					event.preventDefault();
					break;
				case keyCode.ENTER:
					// when menu is open or has focus
					if ( self.menu.active ) {
						event.preventDefault();
					}
					//passthrough - ENTER and TAB both select the current element
				case keyCode.TAB:
					if ( !self.menu.active ) {
						return;
					}
					self.menu.select( event );
					break;
				case keyCode.ESCAPE:
					self.element.val( self.term );
					self.close( event );
					break;
				case keyCode.LEFT:
				case keyCode.RIGHT:
				case keyCode.SHIFT:
				case keyCode.CONTROL:
				case keyCode.ALT:
					// ignore metakeys (shift, ctrl, alt)
					break;
				default:
					// keypress is triggered before the input value is changed
					clearTimeout( self.searching );
					self.searching = setTimeout(function() {
						self.search( null, event );
					}, self.options.delay );
					break;
				}
			})
			.bind( "focus.autocomplete", function() {
				self.selectedItem = null;
				self.previous = self.element.val();
			})
			.bind( "blur.autocomplete", function( event ) {
				clearTimeout( self.searching );
				// clicks on the menu (or a button to trigger a search) will cause a blur event
				// TODO try to implement this without a timeout, see clearTimeout in search()
				self.closing = setTimeout(function() {
					self.close( event );
					self._change( event );
				}, 150 );
			});
		this._initSource();
		this.response = function() {
			return self._response.apply( self, arguments );
		};
		this.menu = $( "<ul></ul>" )
			.addClass( "ui-autocomplete" )
			.appendTo( "body", doc )
			.menu({
				focus: function( event, ui ) {
					var item = ui.item.data( "item.autocomplete" );
					if ( false !== self._trigger( "focus", null, { item: item } ) ) {
						// use value to match what will end up in the input, if it was a key event
						if ( /^key/.test(event.originalEvent.type) ) {
							self.element.val( item.value );
						}
					}
				},
				selected: function( event, ui ) {
					var item = ui.item.data( "item.autocomplete" );
					if ( false !== self._trigger( "select", event, { item: item } ) ) {
						self.element.val( item.value );
					}
					self.close( event );
					// only trigger when focus was lost (click on menu)
					var previous = self.previous;
					if ( self.element[0] !== doc.activeElement ) {
						self.element.focus();
						self.previous = previous;
					}
					self.selectedItem = item;
				},
				blur: function( event, ui ) {
					if ( self.menu.element.is(":visible") ) {
						self.element.val( self.term );
					}
				}
			})
			.zIndex( this.element.zIndex() + 1 )
			// workaround for jQuery bug #5781 http://dev.jquery.com/ticket/5781
			.css({ top: 0, left: 0 })
			.hide()
			.data( "menu" );
		if ( $.fn.bgiframe ) {
			 this.menu.element.bgiframe();
		}
	},

	destroy: function() {
		this.element
			.removeClass( "ui-autocomplete-input" )
			.removeAttr( "autocomplete" )
			.removeAttr( "role" )
			.removeAttr( "aria-autocomplete" )
			.removeAttr( "aria-haspopup" );
		this.menu.element.remove();
		$.Widget.prototype.destroy.call( this );
	},

	_setOption: function( key ) {
		$.Widget.prototype._setOption.apply( this, arguments );
		if ( key === "source" ) {
			this._initSource();
		}
	},

	_initSource: function() {
		var array,
			url;
		if ( $.isArray(this.options.source) ) {
			array = this.options.source;
			this.source = function( request, response ) {
				response( $.ui.autocomplete.filter(array, request.term) );
			};
		} else if ( typeof this.options.source === "string" ) {
			url = this.options.source;
			this.source = function( request, response ) {
				$.getJSON( url, request, response );
			};
		} else {
			this.source = this.options.source;
		}
	},

	search: function( value, event ) {
		value = value != null ? value : this.element.val();
		if ( value.length < this.options.minLength ) {
			return this.close( event );
		}

		clearTimeout( this.closing );
		if ( this._trigger("search") === false ) {
			return;
		}

		return this._search( value );
	},

	_search: function( value ) {
		this.term = this.element
			.addClass( "ui-autocomplete-loading" )
			// always save the actual value, not the one passed as an argument
			.val();

		this.source( { term: value }, this.response );
	},

	_response: function( content ) {
		if ( content.length ) {
			content = this._normalize( content );
			this._suggest( content );
			this._trigger( "open" );
		} else {
			this.close();
		}
		this.element.removeClass( "ui-autocomplete-loading" );
	},

	close: function( event ) {
		clearTimeout( this.closing );
		if ( this.menu.element.is(":visible") ) {
			this._trigger( "close", event );
			this.menu.element.hide();
			this.menu.deactivate();
		}
	},
	
	_change: function( event ) {
		if ( this.previous !== this.element.val() ) {
			this._trigger( "change", event, { item: this.selectedItem } );
		}
	},

	_normalize: function( items ) {
		// assume all items have the right format when the first item is complete
		if ( items.length && items[0].label && items[0].value ) {
			return items;
		}
		return $.map( items, function(item) {
			if ( typeof item === "string" ) {
				return {
					label: item,
					value: item
				};
			}
			return $.extend({
				label: item.label || item.value,
				value: item.value || item.label
			}, item );
		});
	},

	_suggest: function( items ) {
		var ul = this.menu.element
				.empty()
				.zIndex( this.element.zIndex() + 1 ),
			menuWidth,
			textWidth;
		this._renderMenu( ul, items );
		// TODO refresh should check if the active item is still in the dom, removing the need for a manual deactivate
		this.menu.deactivate();
		this.menu.refresh();
		this.menu.element.show().position({
			my: "left top",
			at: "left bottom",
			of: this.element,
			collision: "none"
		});

		menuWidth = ul.width( "" ).width();
		textWidth = this.element.width();
		ul.width( Math.max( menuWidth, textWidth ) );
	},
	
	_renderMenu: function( ul, items ) {
		var self = this;
		$.each( items, function( index, item ) {
			self._renderItem( ul, item );
		});
	},

	_renderItem: function( ul, item) {
		return $( "<li></li>" )
			.data( "item.autocomplete", item )
			.append( "<a>" + item.label + "</a>" )
			.appendTo( ul );
	},

	_move: function( direction, event ) {
		if ( !this.menu.element.is(":visible") ) {
			this.search( null, event );
			return;
		}
		if ( this.menu.first() && /^previous/.test(direction) ||
				this.menu.last() && /^next/.test(direction) ) {
			this.element.val( this.term );
			this.menu.deactivate();
			return;
		}
		this.menu[ direction ]( event );
	},

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

$.extend( $.ui.autocomplete, {
	escapeRegex: function( value ) {
		return value.replace( /([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1" );
	},
	filter: function(array, term) {
		var matcher = new RegExp( $.ui.autocomplete.escapeRegex(term), "i" );
		return $.grep( array, function(value) {
			return matcher.test( value.label || value.value || value );
		});
	}
});

}( jQuery ));

/*
 * jQuery UI Menu (not officially released)
 * 
 * This widget isn't yet finished and the API is subject to change. We plan to finish
 * it for the next release. You're welcome to give it a try anyway and give us feedback,
 * as long as you're okay with migrating your code later on. We can help with that, too.
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Menu
 *
 * Depends:
 *	jquery.ui.core.js
 *  jquery.ui.widget.js
 */
(function($) {

$.widget("ui.menu", {
	_create: function() {
		var self = this;
		this.element
			.addClass("ui-menu ui-widget ui-widget-content ui-corner-all")
			.attr({
				role: "listbox",
				"aria-activedescendant": "ui-active-menuitem"
			})
			.click(function( event ) {
				if ( !$( event.target ).closest( ".ui-menu-item a" ).length ) {
					return;
				}
				// temporary
				event.preventDefault();
				self.select( event );
			});
		this.refresh();
	},
	
	refresh: function() {
		var self = this;

		// don't refresh list items that are already adapted
		var items = this.element.children("li:not(.ui-menu-item):has(a)")
			.addClass("ui-menu-item")
			.attr("role", "menuitem");
		
		items.children("a")
			.addClass("ui-corner-all")
			.attr("tabindex", -1)
			// mouseenter doesn't work with event delegation
			.mouseenter(function( event ) {
				self.activate( event, $(this).parent() );
			})
			.mouseleave(function() {
				self.deactivate();
			});
	},

	activate: function( event, item ) {
		this.deactivate();
		if (this.hasScroll()) {
			var offset = item.offset().top - this.element.offset().top,
				scroll = this.element.attr("scrollTop"),
				elementHeight = this.element.height();
			if (offset < 0) {
				this.element.attr("scrollTop", scroll + offset);
			} else if (offset > elementHeight) {
				this.element.attr("scrollTop", scroll + offset - elementHeight + item.height());
			}
		}
		this.active = item.eq(0)
			.children("a")
				.addClass("ui-state-hover")
				.attr("id", "ui-active-menuitem")
			.end();
		this._trigger("focus", event, { item: item });
	},

	deactivate: function() {
		if (!this.active) { return; }

		this.active.children("a")
			.removeClass("ui-state-hover")
			.removeAttr("id");
		this._trigger("blur");
		this.active = null;
	},

	next: function(event) {
		this.move("next", ".ui-menu-item:first", event);
	},

	previous: function(event) {
		this.move("prev", ".ui-menu-item:last", event);
	},

	first: function() {
		return this.active && !this.active.prev().length;
	},

	last: function() {
		return this.active && !this.active.next().length;
	},

	move: function(direction, edge, event) {
		if (!this.active) {
			this.activate(event, this.element.children(edge));
			return;
		}
		var next = this.active[direction + "All"](".ui-menu-item").eq(0);
		if (next.length) {
			this.activate(event, next);
		} else {
			this.activate(event, this.element.children(edge));
		}
	},

	// TODO merge with previousPage
	nextPage: function(event) {
		if (this.hasScroll()) {
			// TODO merge with no-scroll-else
			if (!this.active || this.last()) {
				this.activate(event, this.element.children(":first"));
				return;
			}
			var base = this.active.offset().top,
				height = this.element.height(),
				result = this.element.children("li").filter(function() {
					var close = $(this).offset().top - base - height + $(this).height();
					// TODO improve approximation
					return close < 10 && close > -10;
				});

			// TODO try to catch this earlier when scrollTop indicates the last page anyway
			if (!result.length) {
				result = this.element.children(":last");
			}
			this.activate(event, result);
		} else {
			this.activate(event, this.element.children(!this.active || this.last() ? ":first" : ":last"));
		}
	},

	// TODO merge with nextPage
	previousPage: function(event) {
		if (this.hasScroll()) {
			// TODO merge with no-scroll-else
			if (!this.active || this.first()) {
				this.activate(event, this.element.children(":last"));
				return;
			}

			var base = this.active.offset().top,
				height = this.element.height();
				result = this.element.children("li").filter(function() {
					var close = $(this).offset().top - base + height - $(this).height();
					// TODO improve approximation
					return close < 10 && close > -10;
				});

			// TODO try to catch this earlier when scrollTop indicates the last page anyway
			if (!result.length) {
				result = this.element.children(":first");
			}
			this.activate(event, result);
		} else {
			this.activate(event, this.element.children(!this.active || this.first() ? ":last" : ":first"));
		}
	},

	hasScroll: function() {
		return this.element.height() < this.element.attr("scrollHeight");
	},

	select: function( event ) {
		this._trigger("selected", event, { item: this.active });
	}
});

}(jQuery));
/*
 * jQuery UI Button 1.8.1
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Button
 *
 * Depends:
 *	jquery.ui.core.js
 *	jquery.ui.widget.js
 */
(function( $ ) {

var lastActive,
	baseClasses = "ui-button ui-widget ui-state-default ui-corner-all",
	otherClasses = "ui-state-hover ui-state-active " +
		"ui-button-icons-only ui-button-icon-only ui-button-text-icons ui-button-text-icon ui-button-text-only",
	formResetHandler = function( event ) {
		$( ":ui-button", event.target.form ).each(function() {
			var inst = $( this ).data( "button" );
			setTimeout(function() {
				inst.refresh();
			}, 1 );
		});
	},
	radioGroup = function( radio ) {
		var name = radio.name,
			form = radio.form,
			radios = $( [] );
		if ( name ) {
			if ( form ) {
				radios = $( form ).find( "[name='" + name + "']" );
			} else {
				radios = $( "[name='" + name + "']", radio.ownerDocument )
					.filter(function() {
						return !this.form;
					});
			}
		}
		return radios;
	};

$.widget( "ui.button", {
	options: {
		text: true,
		label: null,
		icons: {
			primary: null,
			secondary: null
		}
	},
	_create: function() {
		this.element.closest( "form" )
			.unbind( "reset.button" )
			.bind( "reset.button", formResetHandler );

		this._determineButtonType();
		this.hasTitle = !!this.buttonElement.attr( "title" );

		var self = this,
			options = this.options,
			toggleButton = this.type === "checkbox" || this.type === "radio",
			hoverClass = "ui-state-hover" + ( !toggleButton ? " ui-state-active" : "" ),
			focusClass = "ui-state-focus";

		if ( options.label === null ) {
			options.label = this.buttonElement.html();
		}

		if ( this.element.is( ":disabled" ) ) {
			options.disabled = true;
		}

		this.buttonElement
			.addClass( baseClasses )
			.attr( "role", "button" )
			.bind( "mouseenter.button", function() {
				if ( options.disabled ) {
					return;
				}
				$( this ).addClass( "ui-state-hover" );
				if ( this === lastActive ) {
					$( this ).addClass( "ui-state-active" );
				}
			})
			.bind( "mouseleave.button", function() {
				if ( options.disabled ) {
					return;
				}
				$( this ).removeClass( hoverClass );
			})
			.bind( "focus.button", function() {
				// no need to check disabled, focus won't be triggered anyway
				$( this ).addClass( focusClass );
			})
			.bind( "blur.button", function() {
				$( this ).removeClass( focusClass );
			});

		if ( toggleButton ) {
			this.element.bind( "change.button", function() {
				self.refresh();
			});
		}

		if ( this.type === "checkbox" ) {
			this.buttonElement.bind( "click.button", function() {
				if ( options.disabled ) {
					return false;
				}
				$( this ).toggleClass( "ui-state-active" );
				self.buttonElement.attr( "aria-pressed", self.element[0].checked );
			});
		} else if ( this.type === "radio" ) {
			this.buttonElement.bind( "click.button", function() {
				if ( options.disabled ) {
					return false;
				}
				$( this ).addClass( "ui-state-active" );
				self.buttonElement.attr( "aria-pressed", true );

				var radio = self.element[ 0 ];
				radioGroup( radio )
					.not( radio )
					.map(function() {
						return $( this ).button( "widget" )[ 0 ];
					})
					.removeClass( "ui-state-active" )
					.attr( "aria-pressed", false );
			});
		} else {
			this.buttonElement
				.bind( "mousedown.button", function() {
					if ( options.disabled ) {
						return false;
					}
					$( this ).addClass( "ui-state-active" );
					lastActive = this;
					$( document ).one( "mouseup", function() {
						lastActive = null;
					});
				})
				.bind( "mouseup.button", function() {
					if ( options.disabled ) {
						return false;
					}
					$( this ).removeClass( "ui-state-active" );
				})
				.bind( "keydown.button", function(event) {
					if ( options.disabled ) {
						return false;
					}
					if ( event.keyCode == $.ui.keyCode.SPACE || event.keyCode == $.ui.keyCode.ENTER ) {
						$( this ).addClass( "ui-state-active" );
					}
				})
				.bind( "keyup.button", function() {
					$( this ).removeClass( "ui-state-active" );
				});

			if ( this.buttonElement.is("a") ) {
				this.buttonElement.keyup(function(event) {
					if ( event.keyCode === $.ui.keyCode.SPACE ) {
						// TODO pass through original event correctly (just as 2nd argument doesn't work)
						$( this ).click();
					}
				});
			}
		}

		// TODO: pull out $.Widget's handling for the disabled option into
		// $.Widget.prototype._setOptionDisabled so it's easy to proxy and can
		// be overridden by individual plugins
		this._setOption( "disabled", options.disabled );
	},

	_determineButtonType: function() {
		
		if ( this.element.is(":checkbox") ) {
			this.type = "checkbox";
		} else {
			if ( this.element.is(":radio") ) {
				this.type = "radio";
			} else {
				if ( this.element.is("input") ) {
					this.type = "input";
				} else {
					this.type = "button";
				}
			}
		}
		
		if ( this.type === "checkbox" || this.type === "radio" ) {
			// we don't search against the document in case the element
			// is disconnected from the DOM
			this.buttonElement = this.element.parents().last()
				.find( "[for=" + this.element.attr("id") + "]" );
			this.element.addClass( "ui-helper-hidden-accessible" );

			var checked = this.element.is( ":checked" );
			if ( checked ) {
				this.buttonElement.addClass( "ui-state-active" );
			}
			this.buttonElement.attr( "aria-pressed", checked );
		} else {
			this.buttonElement = this.element;
		}
	},

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

	destroy: function() {
		this.element
			.removeClass( "ui-helper-hidden-accessible" );
		this.buttonElement
			.removeClass( baseClasses + " " + otherClasses )
			.removeAttr( "role" )
			.removeAttr( "aria-pressed" )
			.html( this.buttonElement.find(".ui-button-text").html() );

		if ( !this.hasTitle ) {
			this.buttonElement.removeAttr( "title" );
		}

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

	_setOption: function( key, value ) {
		$.Widget.prototype._setOption.apply( this, arguments );
		if ( key === "disabled" ) {
			if ( value ) {
				this.element.attr( "disabled", true );
			} else {
				this.element.removeAttr( "disabled" );
			}
		}
		this._resetButton();
	},

	refresh: function() {
		var isDisabled = this.element.is( ":disabled" );
		if ( isDisabled !== this.options.disabled ) {
			this._setOption( "disabled", isDisabled );
		}
		if ( this.type === "radio" ) {
			radioGroup( this.element[0] ).each(function() {
				if ( $( this ).is( ":checked" ) ) {
					$( this ).button( "widget" )
						.addClass( "ui-state-active" )
						.attr( "aria-pressed", true );
				} else {
					$( this ).button( "widget" )
						.removeClass( "ui-state-active" )
						.attr( "aria-pressed", false );
				}
			});
		} else if ( this.type === "checkbox" ) {
			if ( this.element.is( ":checked" ) ) {
				this.buttonElement
					.addClass( "ui-state-active" )
					.attr( "aria-pressed", true );
			} else {
				this.buttonElement
					.removeClass( "ui-state-active" )
					.attr( "aria-pressed", false );
			}
		}
	},

	_resetButton: function() {
		if ( this.type === "input" ) {
			if ( this.options.label ) {
				this.element.val( this.options.label );
			}
			return;
		}
		var buttonElement = this.buttonElement,
			buttonText = $( "<span></span>" )
				.addClass( "ui-button-text" )
				.html( this.options.label )
				.appendTo( buttonElement.empty() )
				.text(),
			icons = this.options.icons,
			multipleIcons = icons.primary && icons.secondary;
		if ( icons.primary || icons.secondary ) {
			buttonElement.addClass( "ui-button-text-icon" +
				( multipleIcons ? "s" : "" ) );
			if ( icons.primary ) {
				buttonElement.prepend( "<span class='ui-button-icon-primary ui-icon " + icons.primary + "'></span>" );
			}
			if ( icons.secondary ) {
				buttonElement.append( "<span class='ui-button-icon-secondary ui-icon " + icons.secondary + "'></span>" );
			}
			if ( !this.options.text ) {
				buttonElement
					.addClass( multipleIcons ? "ui-button-icons-only" : "ui-button-icon-only" )
					.removeClass( "ui-button-text-icons ui-button-text-icon" );
				if ( !this.hasTitle ) {
					buttonElement.attr( "title", buttonText );
				}
			}
		} else {
			buttonElement.addClass( "ui-button-text-only" );
		}
	}
});

$.widget( "ui.buttonset", {
	_create: function() {
		this.element.addClass( "ui-buttonset" );
		this._init();
	},
	
	_init: function() {
		this.refresh();
	},

	_setOption: function( key, value ) {
		if ( key === "disabled" ) {
			this.buttons.button( "option", key, value );
		}

		$.Widget.prototype._setOption.apply( this, arguments );
	},
	
	refresh: function() {
		this.buttons = this.element.find( ":button, :submit, :reset, :checkbox, :radio, a, :data(button)" )
			.filter( ":ui-button" )
				.button( "refresh" )
			.end()
			.not( ":ui-button" )
				.button()
			.end()
			.map(function() {
				return $( this ).button( "widget" )[ 0 ];
			})
				.removeClass( "ui-corner-all ui-corner-left ui-corner-right" )
				.filter( ":first" )
					.addClass( "ui-corner-left" )
				.end()
				.filter( ":last" )
					.addClass( "ui-corner-right" )
				.end()
			.end();
	},

	destroy: function() {
		this.element.removeClass( "ui-buttonset" );
		this.buttons
			.map(function() {
				return $( this ).button( "widget" )[ 0 ];
			})
				.removeClass( "ui-corner-left ui-corner-right" )
			.end()
			.button( "destroy" )

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

}( jQuery ) );