jQuery.fn.bxSlider = function(options){
	var defaults = {
		mode: 'slide',
		speed: 500,
		auto: false,
		auto_direction: 'left',
		pause: 2500,
		controls: true,
		prev_text: 'prev',
		next_text: 'next',
		width: $(this).children().width(),
		prev_img: '',
		next_img: '',
		ticker_direction: 'left',
		wrapper_class: 'container'
	};
	options = $.extend(defaults, options);
	if(options.mode == 'ticker'){
		options.auto = true;
	}
	var $this = $(this);
	var $parent_width = options.width;	
	var current = 0;
	var is_working = false;
	var child_count = $this.children().size();
	var i = 0;
	var j = 0;
	var k = 0;

	function animate_next(){
		is_working = true;
		$this.animate({'left':'-' + $parent_width * 2 + 'px'}, options.speed, function(){
			$this.css({'left':'-' + $parent_width + 'px'}).children(':first').appendTo($this);
			is_working = false;
		});		
	}
	
	function animate_prev(){
		is_working = true;
		$this.animate({'left': 0}, options.speed, function(){
			$this.css({'left':'-' + $parent_width + 'px'}).children(':last').insertBefore($this.children(':first'));
			is_working = false;
		});				
	}
	
	function fade(direction){
		if(direction == 'next'){
			var last_before_switch = child_count - 1;
			var start_over = 0;
			var incr = k + 1;
		}else if(direction == 'prev'){
			var last_before_switch = 0;
			var start_over = child_count -1;
			var incr = k - 1;
		}		
		is_working = true;
		if(k == last_before_switch){
			$this.children().eq(k).fadeTo(options.speed, 0, function(){$(this).hide();});
			$this.children().eq(start_over).show().fadeTo(options.speed, 1, function(){
			is_working = false;
			k = start_over;
			});
		}else{
			$this.children().eq(k).fadeTo(options.speed, 0, function(){$(this).hide();});
			$this.children().eq(incr).show().fadeTo(options.speed, 1, function(){
			is_working = false;
			k = incr;
			});
		}		
	}
	
	function add_controls(){
		if(options.prev_img != '' || options.next_img != ''){
			$this.parent().append('<a class="slider_prev" href=""><img src="' + options.prev_img + '" alt=""/></a><a class="slider_next" href=""><img src="' + options.next_img + '" alt="" /></a>');
		}else{
			$this.parent().append('<a class="slider_prev" href="">' + options.prev_text + '</a><a class="slider_next" href="">' + options.next_text + '</a>');
		}
		$this.parent().find('.slider_prev').css({'float':'left', 'outline':'0'});
		$this.parent().find('.slider_next').css({'float':'right', 'outline':'0'});
		
		if(options.mode == 'fade'){
			$this.parent().find('.slider_prev').css({'paddingTop' : $this.children().height()})
			$this.parent().find('.slider_next').css({'paddingTop' : $this.children().height()})
		}		
		                                                       
		$this.parent().find('.slider_next').click(function(){		
			if(!is_working){
				if(options.mode == 'slide'){
					animate_next();
					if(options.auto){
						clearInterval($.t);
						$.t = setInterval(function(){animate_next();}, options.pause);
					}
				}else if(options.mode == 'fade'){
					fade('next');
					if(options.auto){
						clearInterval($.t);
						$.t = setInterval(function(){fade('next');}, options.pause);
					}
				}
			}
			return false;
		});	
		
		$this.parent().find('.slider_prev').click(function(){	
			if(!is_working){
				if(options.mode == 'slide'){
					animate_prev();
					if(options.auto){
						clearInterval($.t);
						$.t = setInterval(function(){animate_prev();}, options.pause);
					}
				}else if(options.mode == 'fade'){
					fade('prev');
					if(options.auto){
						clearInterval($.t);
						$.t = setInterval(function(){fade('prev');}, options.pause);
					}
				}
			}
			return false;
		});	
	}
	
	function ticker() {
		if(options.ticker_direction == 'left'){
			$this.animate({'left':'-' + $parent_width * 2 + 'px'}, options.speed, 'linear', function(){
				$this.css({'left':'-' + $parent_width + 'px'}).children(':first').appendTo($this);
				ticker();
			});		
		}else if(options.ticker_direction == 'right'){
			$this.animate({'left': 0}, options.speed, 'linear', function(){
				$this.css({'left':'-' + $parent_width + 'px'}).children(':last').insertBefore($this.children(':first'));
				ticker();
			});				
		}		
	}
		
	$this.wrap('<div class="' + options.wrapper_class + '"></div>');
			
	if(options.mode == 'slide' || options.mode == 'ticker'){
		$this.parent().css({
			'position' : 'relative',
			'width' : options.width + 'px'
		});
		$this.css({		
			'width' : '999999px',
			'position' : 'relative',
			'left' : '-' + $parent_width + 'px'		
		});
		$this.children().css({		
			'float' : 'left',
			'width' : $parent_width
		});
		$this.children(':last').insertBefore($this.children(':first'));
	}else if(options.mode == 'fade'){
		$this.parent().css({
			'position' : 'relative',
			'width' : options.width + 'px'
		});
		if(!options.controls){		
			$this.parent().css({'height' : $this.children().height()});		
		}
		$this.children().css({		
			'position' : 'absolute',
			'width' : $parent_width,
			'listStyle' : 'none',
			'opacity' : 0,
			'display' : 'none'	
		});
		$this.children(':first').css({
			'opacity' : 1,
			'display' : 'block'
		});
	}
	
	if(!options.auto){
		add_controls();
	}else{
		if(options.mode == 'ticker'){
			ticker();
		}else{
			if(options.mode == 'slide'){
				if(options.auto_direction == 'left'){
					$.t = setInterval(function(){animate_next();}, options.pause);		
				}else if(options.auto_direction == 'right'){
					$.t = setInterval(function(){animate_prev();}, options.pause);
				}
			}else if(options.mode == 'fade'){
				if(options.auto_direction == 'left'){
					$.t = setInterval(function(){fade('next');}, options.pause);
				}else if(options.auto_direction == 'right'){
					$.t = setInterval(function(){fade('prev');}, options.pause);
				}
			}
			if(options.controls){
				add_controls();
			}
		}
	}
	return {
	    animate_next: animate_next,
	    animate_prev: animate_prev,
		fade: fade,
	    clearInterval: function() { clearInterval($.t); },
	    restoreInterval: function() { $.t = setInterval(function(){fade('next');}, options.pause); },
		restoreSlideInterval: function() { $.t = setInterval(function(){animate_next();}, options.pause); }
	}
}