$(document).ready(function(){
	$('div#gallery').gallSlide({
		duration: 700
	});
	fadeGall();
})

function fadeGall(){
	var wait_time = 5000; // in ms
	var change_speed = 1200; // in ms
	var _hold = $('div.slider');
	if(_hold.length){
		var _t;
		var _f = true;
		var _list = _hold.find('ul.fader > li');
		var _prev = _hold.find('a.link-prev');
		var _next = _hold.find('a.link-next');
		var _btn = $('<ul class="switcher"></ul>');
		_hold.append(_btn);
		_list.each(function(_i){
			_btn.append('<li><a href="#">'+(_i+1)+'</a></li>');
		});
		_btn = _btn.find('a');
		var _a = _list.index(_list.filter('.active:eq(0)'));
		if(_a == -1) _a = 0;
		
		_list.removeClass('active').css('opacity', 0).eq(_a).addClass('active').css('opacity', 1);
		_btn.eq(_a).parent('li').addClass('active');
		_btn.click(function(){
			changeEl(_btn.index(this));
			return false;
		});
		
		_prev.click(function(){
			if(_a <= 0) changeEl(_list.length-1);
			else changeEl(_a-1);
			return false;
		});
		_next.click(function(){
			if(_a < _list.length - 1) changeEl(_a + 1);
			else changeEl(0);
			return false;
		});
		
		_hold.mouseenter(function(){
			_f = false;
			if(_t) clearTimeout(_t);
		}).mouseleave(function(){
			_f = true;
			if(_t) clearTimeout(_t);
			if(_f && wait_time){
				_t = setTimeout(function(){
					if(_a < _list.length - 1) changeEl(_a + 1);
					else changeEl(0);
				}, wait_time);
			}
		});
		if(_f && wait_time){
			_t = setTimeout(function(){
				if(_a < _list.length - 1) changeEl(_a + 1);
				else changeEl(0);
			}, wait_time);
		}
		function changeEl(_ind){
			if(_t) clearTimeout(_t);
			if(_ind != _a){
				_list.eq(_a).removeClass('active').animate({opacity: 0}, {queue:false, duration:change_speed});
				_list.eq(_ind).addClass('active').animate({opacity: 1}, {queue:false, duration:change_speed});
				_btn.eq(_a).parent('li').removeClass('active');
				_btn.eq(_ind).parent('li').addClass('active');
				_a = _ind;
			}
			if(_f && wait_time){
				_t = setTimeout(function(){
					if(_a < _list.length - 1) changeEl(_a + 1);
					else changeEl(0);
				}, wait_time);
			}
		}
	}
}
jQuery.fn.gallSlide = function(_options){
	// defaults options	
	var _options = jQuery.extend({
		duration: 700,
		autoSlide: 5000
	},_options);

	return this.each(function(){
		var _hold = $(this);
		var _speed = _options.duration;
		var _timer = _options.autoSlide;
		var _wrap = _hold.find('ul');
		var _el = _hold.find('ul > li');
		var _next = _hold.find('a.next');
		var _prev = _hold.find('a.prev');
		var _count = _el.length-1;
		var _w = _el.outerWidth();
		var _wrapHolderW = Math.ceil(_wrap.parent().width()/_w);
		var _active = 0;
		function scrollEl(){
			_wrap.eq(0).animate({
				marginLeft: -(_w * _active) + "px"
			}, {queue:false, duration: _speed});
		}
		_next.click(function(){
			_active++;
			if (_active > (_count - _wrapHolderW + 1)) _active = 0;
			scrollEl();
			return false;
		});
		_prev.click(function(){
			_active--;
			if (_active < 0) _active = _count - _wrapHolderW + 1;
			scrollEl();
			return false;
		});
	});
}