(function($) {
		$.fn.extend({
			"soChange": function(o) {
				o = $.extend({
					thumbObj: null,
					botPrev: null,
					botNext: null,
					changeType: 'fade',
					thumbNowClass: 'act',
					thumbOverEvent: true,
					slideTime: 1000,
					autoChange: true,
					clickFalse: true,
					overStop: true,
					changeTime: 5000,
					delayTime: 300
				}, o || {});
				var _self = $(this);
				var thumbObj;
				var size = _self.size();
				var nowIndex = 0;
				var index;
				var startRun;
				var delayRun;

				function fadeAB() {
					if (nowIndex != index) {
						if (o.thumbObj) {
							$(o.thumbObj).removeClass(o.thumbNowClass).eq(index).addClass(o
								.thumbNowClass);
						}
						if (o.slideTime <= 0) {
							_self.eq(nowIndex).hide();
							_self.eq(index).show();
						} else if (o.changeType == 'fade') {
							_self.eq(nowIndex).fadeOut(o.slideTime);
							_self.eq(index).fadeIn(o.slideTime);
						} else {
							_self.eq(nowIndex).slideUp(o.slideTime);
							_self.eq(index).slideDown(o.slideTime);
						}
						nowIndex = index;
					}
				}

				function runNext() {
					index = (nowIndex + 1) % size;
					fadeAB();
				}
				_self.hide().eq(0).show();
				if (o.thumbObj) {
					thumbObj = $(o.thumbObj);
					thumbObj.removeClass(o.thumbNowClass).eq(0).addClass(o.thumbNowClass);
					thumbObj.click(function() {
						index = thumbObj.index($(this));
						fadeAB();
						if (o.clickFalse) {
							return false;
						}
					});
					if (o.thumbOverEvent) {
						thumbObj.hover(function() {
							index = thumbObj.index($(this));
							delayRun = setTimeout(fadeAB, o.delayTime);
						}, function() {
							clearTimeout(delayRun);
						});
					}
				}
				if (o.botNext) {
					$(o.botNext).click(function() {
						if (_self.queue().length < 1) {
							runNext();
						}
						return false;
					});
				}
				if (o.botPrev) {
					$(o.botPrev).click(function() {
						if (_self.queue().length < 1) {
							index = (nowIndex + size - 1) % size;
							fadeAB();
						}
						return false;
					});
				}
				if (o.autoChange) {
					startRun = setInterval(runNext, o.changeTime);
					if (o.overStop) {
						_self.hover(function() {
							clearInterval(startRun);
						}, function() {
							startRun = setInterval(runNext, o.changeTime);
						});
					}
				}
			}
		})
	})(jQuery);