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/*!

 * 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);