/*
 * 	Easy Slider 1.7 - jQuery plugin
 *	written by Alen Grakalic	
 *	http://cssglobe.com/post/4004/easy-slider-15-the-easiest-jquery-plugin-for-sliding
 *
 *	Copyright (c) 2009 Alen Grakalic (http://cssglobe.com)
 *	Dual licensed under the MIT (MIT-LICENSE.txt)
 *	and GPL (GPL-LICENSE.txt) licenses.
 *
 *	Built for jQuery library
 *	http://jquery.com
 *
 */
 
(function($) {
$.fn.easySlider = function(options){
var defaults = {prevId: 'prevBtn', prevText: 'Previous', nextId: 'nextBtn', nextText: ' ', controlsShow: true, controlsBefore: '', controlsAfter: '', controlsFade: true, firstId: 'firstBtn',firstText:' ', firstShow: false, lastId: 'lastBtn', lastText: 'Last', lastShow: false, vertical: false, speed: 800, auto: false, pause: 4000, continuous: false, numeric: false, numericId: 'controls' }; 
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(); var clickable = true; 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.continuous){ $("ul", obj).prepend($("ul li:last-child", obj).clone().css("margin-left","-"+ w +"px")); $("ul", obj).append($("ul li:nth-child(2)", obj).clone()); $("ul", obj).css('width',(s+1)*w); };				
if(!options.vertical) $("li", obj).css('float','left');
if(options.controlsShow){
var html = options.controlsBefore;
if(options.numeric){
html += '<ol id="'+ options.numericId +'"></ol>';
} else {
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);
};
if(options.numeric){
for(var i=0;i<s;i++){
$(document.createElement("li"))
.attr('id',options.numericId + (i+1))
.html('<a rel='+ i +' href=\"javascript:void(0);\">'+ (i+1) +'</a>')
.appendTo($("#"+ options.numericId))
.click(function(){
animate($("a",$(this)).attr('rel'),true);
});
};
} else {
$("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 setCurrent(i){
i = parseInt(i)+1;
$("li", "#" + options.numericId).removeClass("current");
$("li#" + options.numericId + i).addClass("current");
};
function adjust(){
if(t>ts) t=0;		
if(t<0) t=ts;	
if(!options.vertical) {
$("ul",obj).css("margin-left",(t*w*-1));
} else {
$("ul",obj).css("margin-left",(t*h*-1));
}
clickable = true;
if(options.numeric) setCurrent(t);
};
function animate(dir,clicked){
if (clickable){
clickable = false;
var ot = t;				
switch(dir){
case "next":
t = (ot>=ts) ? (options.continuous ? t+1 : ts) : t+1;						
break; 
case "prev":
t = (t<=0) ? (options.continuous ? t-1 : 0) : t-1;
break; 
case "first":
t = 0;
break; 
case "last":
t = ts;
break; 
default:
t = dir;
break; 
};	
var diff = Math.abs(ot-t);
var speed = diff*options.speed;						
if(!options.vertical) {
p = (t*w*-1);
$("ul",obj).animate(
{ marginLeft: p }, 
{ queue:false, duration:speed, complete:adjust }
);				
} else {
p = (t*h*-1);
$("ul",obj).animate(
{ marginTop: p }, 
{ queue:false, duration:speed, complete:adjust }
);					
};
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);
};
};
};
var timeout;
if(options.auto){;
timeout = setTimeout(function(){
animate("next",false);
},options.pause);
};		
if(options.numeric) setCurrent(0);
if(!options.continuous && options.controlsFade){					
$("a","#"+options.prevId).hide();
$("a","#"+options.firstId).hide();				
};				
});
};

})(jQuery);