var initCityInput = function(element, flag) {
	//城市列表
	var cities = {
		'hot': [
			'北京', '上海', '广州', '深圳',
			'成都', '重庆', '西安', '杭州',
			'武汉', '南京', '沈阳', '天津',
			'大连', '青岛', '长沙', '昆明',
			'长春', '郑州', '海口', '合肥',
			'济南', '福州', '哈尔滨', '乌鲁木齐'
		]
	},
		cityListContainer = $('#cityList' + flag),
		statisticsValue1 = (flag == 'From' ? '0' : '1'),
		listContainer = $('ul.cityContent', cityListContainer);
	
	//点击图标
	element.add('#cityOpen' + flag).click(function(event) {
		if ($('#flight' + flag).hasClass('errorInput')) {
			$('#flight' + flag).removeClass('errorInput').unbind('focus').val('');
		}
		if (cityListContainer.is(":visible")) {
			cityListContainer.hide();
			Statistics.trigger(7, statisticsValue1, '1');
		} else {
			cityListContainer.show();
			$('#cityList' + (flag == 'From' ? 'To' : 'From' )).hide();
			Statistics.trigger(7, statisticsValue1, '0');
		}
		event.stopPropagation();
	});
	$('#cityClose' + flag).click(function(event) {
		cityListContainer.hide();
		Statistics.trigger(9, statisticsValue1);
		event.stopPropagation();
	});
	
	//绘制城市列表
	listContainer.empty();
	for (var i=0; i<cities.hot.length; i++) {
		$('<li>').text(cities.hot[i]).appendTo(listContainer);
	}

	cityListContainer.click(function(event) {
		if (event.target.tagName == 'LI') {
			var selectedCity = $(event.target).text();

			$('#flight' + flag).focus().val(selectedCity);
			InputKeeper.keep(flag.toLowerCase(), selectedCity);
			cityListContainer.hide();
			if ($(event.target).parent().hasClass('cityHistory')) {
				Statistics.trigger(39, statisticsValue1, encodeURIComponent(selectedCity));
			} else {
				Statistics.trigger(8, statisticsValue1, encodeURIComponent(selectedCity));
			}
		}
	});

	//点击输入框
	element.click(function() {
		$(this).select();
	});

	//自动完成
	element.textext({
		plugins: 'autocomplete prompt',
		autocomplete: {
			dropdownMaxHeight : '160px',
			render: function(suggestion) {
				return '<label class="text-label text-label-left">' + suggestion[0] + '</label>' + '  '
					+ '<label class="text-label text-label-right">' + suggestion[1] + '</label>';
			}
		},

		prompt: flag == 'From' ? '出发地' : '目的地',
		
		itemManager: function() {
			return {
				compareItems: function(item1, item2) {
					return item1[0] == item2[0];
				},
				filter: function(list, query) {
					var result = [],
						regularQuery = query.replace(/\s/g, '').toLowerCase(),
						i = list.length - 1,
						dropdownBox = element.siblings('.text-dropdown');

					for (; i >= 0; i--) {
						if (list[i][0].indexOf(regularQuery) === 0 || list[i][2].indexOf(regularQuery) === 0 || list[i][3].indexOf(regularQuery) === 0) {
							result.push(list[i]);
						}
					}

					if (result.length > 4) {
						element.siblings('.text-dropdown').getNiceScroll().show().resize();
					} else {
						element.siblings('.text-dropdown').getNiceScroll().hide();
					}

					return result;
				},
				itemToString : function(item) {
					Statistics.trigger(38, statisticsValue1, encodeURIComponent(item[0]));
					InputKeeper.keep(flag.toLowerCase(), item[0]);
					return item[0];
				},
				init : function(core) {},
				stringToItem : function() {}
			}
		}
	}).bind('getSuggestions', function(e, data) {
		var textext = $(e.target).textext()[0],
			query = (data ? data.query : '') || '';

		$('#cityList' + (flag == 'From' ? 'From' : 'To' )).hide();

		$(this).trigger(
			'setSuggestions',
			{result: textext.itemManager().filter(CityMap.PinYin, query)}
		);
	});

	element.siblings('.text-dropdown').niceScroll({cursoropacitymin:0.2,cursoropacitymax:0.4,cursorwidth:'6px'});
};