(function($) {
$.fn.easySlider = function(options){
var defaults = {
	prevId: 		'prevBtn',
	prevText: 		' ',
	nextId: 		'nextBtn',	
	nextText: 		' ',
	controlsShow:		true,
	controlsBefore:	'',
	controlsAfter:	'',	
	controlsFade:		true,
	firstId: 		'firstBtn',
	firstText: 		'First',
	firstShow:		false,
	lastId: 		'lastBtn',	
	lastText: 		'Last',
	lastShow:		false,				
	vertical:		false,
	speed: 		800,
	auto:			false,
	pause:			5000,
	continuous:		false
}; 
var options = $.extend(defaults, options);  
this.each(function() {  
	var obj = $(this); 				
	var s = $("li", obj).length;
	var w = $("li", obj).width(); 
	var h = $("li", obj).height(); 
	obj.width(w); 
	obj.height(h); 
	obj.css("overflow","hidden");
	var ts = s-1;
	var t = 0;
	$("ul", obj).css('width',s*w);			
	if(!options.vertical) $("li", obj).css('float','left');
	
	if(options.controlsShow){
		var html = options.controlsBefore;
		if(options.firstShow) html += '<span id="'+ options.firstId +'"><a href=\"javascript:void(0);\">'+ options.firstText +'</a></span>';
		html += ' <span id="'+ options.prevId +'"><a href=\"javascript:void(0);\">'+ options.prevText +'</a></span>';
		html += ' <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\">'+ options.nextText +'</a></span>';
		if(options.lastShow) html += ' <span id="'+ options.lastId +'"><a href=\"javascript:void(0);\">'+ options.lastText +'</a></span>';
		html += options.controlsAfter;						
		$(obj).after(html);										
	};

	$("a","#"+options.nextId).click(function(){		
		animate("next",true);
	});
	$("a","#"+options.prevId).click(function(){		
		animate("prev",true);				
	});	
	$("a","#"+options.firstId).click(function(){		
		animate("first",true);
	});				
	$("a","#"+options.lastId).click(function(){		
		animate("last",true);				
	});		
	
	function animate(dir,clicked){
		var ot = t;				
		switch(dir){
			case "next":
				t = (ot>=ts) ? (options.continuous ? 0 : ts) : t+1;						
				break; 
			case "prev":
				t = (t<=0) ? (options.continuous ? ts : 0) : t-1;
				break; 
			case "first":
				t = 0;
				break; 
			case "last":
				t = ts;
				break; 
			default:
				break; 
		};	
		
		var diff = Math.abs(ot-t);
		var speed = diff*options.speed;						
		if(!options.vertical) {
			p = (t*w*-1);
			$("ul",obj).animate(
				{ marginLeft: p }, 
				speed
			);				
		} else {
			p = (t*h*-1);
			$("ul",obj).animate(
				{ marginTop: p }, 
				speed
			);					
		};
		
		if(!options.continuous && options.controlsFade){					
			if(t==ts){
				$("a","#"+options.nextId).hide();
				$("a","#"+options.lastId).hide();
			} else {
				$("a","#"+options.nextId).show();
				$("a","#"+options.lastId).show();					
			};
			if(t==0){
				$("a","#"+options.prevId).hide();
				$("a","#"+options.firstId).hide();
			} else {
				$("a","#"+options.prevId).show();
				$("a","#"+options.firstId).show();
			};					
		};				
		
		if(clicked) clearTimeout(timeout);
		if(options.auto && dir=="next" && !clicked){;
			timeout = setTimeout(function(){
				animate("next",false);
			},diff*options.speed+options.pause);
		};
		
	};
	// init
	var timeout;
	if(options.auto){;
		timeout = setTimeout(function(){
			animate("next",false);
		},options.pause);
	};		

	if(!options.continuous && options.controlsFade){					
		$("a","#"+options.prevId).hide();
		$("a","#"+options.firstId).hide();				
	};				
	
});

};

})(jQuery);