/*
 * 	Easy Slider 1.5 - jQuery plugin
 *	written by Alen Grakalic	
 *	http://cssglobe.com/post/4004/easy-slider-15-the-easiest-jquery-plugin-for-sliding
 *
 */
 
(function($) {
$.fn.easySlider = function(options){
// default configuration properties
var defaults = {			
prevId: 		'prevBtn',
prevText: 		'<img src=/img/ar2b.gif width=25 height=25 border=0 class=nv alt="Назад">',
nextId: 		'nextBtn',	
nextText: 		'<img src=/img/ar2.gif width=25 height=25 border=0 class=nv alt="Следующий">',
controlsShow:	false,
controlsBefore:	'',
controlsAfter:	'',	
controlsFade:	true,
firstId: 		'firstBtn',
firstText: 		'First',
firstShow:		false,
lastId: 		'lastBtn',	
lastText: 		'Last',
lastShow:		false,				
vertical:		true,
speed: 			800,
auto:			true,
pause:			5000,
continuous:		true
}; 

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(); 
if (h<50) {h=150;}
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 class=nv href=\"javascript:void(0);\">'+ options.nextText +'</a></span>';
	if(options.lastShow) html += ' <span id="'+ options.lastId +'"><a class=nv 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);