/**
 * jquery.scrollable 1.0.2. Put your HTML scroll.
 * 
 * Copyright (c) 2009 Tero Piirainen
 * http://flowplayer.org/tools/scrollable.html
 *
 * Dual licensed under MIT and GPL 2+ licenses
 * http://www.opensource.org/licenses
 *
 * Launch  : March 2008
 * Version : 1.0.2 - Tue Feb 24 2009 10:52:04 GMT-0000 (GMT+00:00)
 */
(function($)
{
function fireEvent(opts,name,self,arg)
{
	var fn=opts[name];
	if($.isFunction(fn)){
		try{return fn.call(self,arg);
	}
	catch(error){
		if(opts.alert){
			alert("Error calling scrollable."+name+": "+error);
	}else{
		throw error;
	}
	return false;
}
}
return true;
}
var current=null;
function Scrollable(root,conf){
	var self=this;
	if(!current){
		current=self;
	}
var horizontal=!conf.vertical;
var wrap=$(conf.items,root);
var index=0;
var navi=root.siblings(conf.navi).eq(0);
var prev=root.siblings(conf.prev).eq(0);
var next=root.siblings(conf.next).eq(0);
var prevPage=root.siblings(conf.prevPage).eq(0);
var nextPage=root.siblings(conf.nextPage).eq(0);
$.extend(self,{
		 getVersion:function(){
			 return[1,0,1];
		 },getIndex:function(){
			 return index;
		 },getConf:function(){
			 return conf;
		 },getSize:function(){
			 return self.getItems().size();
		 },getPageAmount:function(){
			 return Math.ceil(this.getSize()/conf.size);
		 },getPageIndex:function(){
			 return Math.ceil(index/conf.size);
		 },getRoot:function(){
			 return root;
		 },getItemWrap:function(){
			 return wrap;
		 },getItems:function(){
			 return wrap.children();
		 },seekTo:function(i,time,fn){
			 time=time||conf.speed;
			 if($.isFunction(time)){
				 fn=time;time=conf.speed;
			}if(i<0){i=0;}
			if(i>self.getSize()-conf.size){
				return self;
				}
			var item=self.getItems().eq(i);
			if(!item.length){
				return self;
			}
			if(fireEvent(conf,"onBeforeSeek",self,i)===false){
				return self;
				}
			if(horizontal){
				var left=-(item.outerWidth(true)*i);
				wrap.animate({left:left},time,conf.easing,fn?function(){fn.call(self);
				}:null);
			}
			else{
			var top=-(item.outerHeight(true)*i);
			wrap.animate({top:top},time,conf.easing,fn?function(){fn.call(self);
			}:null);
			}
			if(navi.length){
			var klass=conf.activeClass;var page=Math.ceil(i/conf.size);
			page=Math.min(page,navi.children().length-1);
			navi.children().removeClass(klass).eq(page).addClass(klass);
			}
			if(i===0){
				prev.add(prevPage).addClass(conf.disabledClass);
			}
			else{
				prev.add(prevPage).removeClass(conf.disabledClass);
			}
			if(i>=self.getSize()-conf.size){
				next.add(nextPage).addClass(conf.disabledClass);
			}
			else{
				next.add(nextPage).removeClass(conf.disabledClass);
			}
			current=self;index=i;fireEvent(conf,"onSeek",self,i);
			return self;
			},move:function(offset,time,fn){var to=index+offset;
			if(conf.loop&&to>(self.getSize()-conf.size)){
				to=0;
			}
			return this.seekTo(to,time,fn);
			},next:function(time,fn){return this.move(1,time,fn);
			},prev:function(time,fn){return this.move(-1,time,fn);
			},movePage:function(offset,time,fn){return this.move(conf.size*offset,time,fn);
			},setPage:function(page,time,fn){var size=conf.size;
			var index=size*page;
			var lastPage=index+size>=this.getSize();
			if(lastPage){
				index=this.getSize()-conf.size;
			}return this.seekTo(index,time,fn);
			},prevPage:function(time,fn){return this.setPage(this.getPageIndex()-1,time,fn);
			},nextPage:function(time,fn){return this.setPage(this.getPageIndex()+1,time,fn);
			},begin:function(time,fn){return this.seekTo(0,time,fn);
			},end:function(time,fn){return this.seekTo(this.getSize()-conf.size,time,fn);
			},reload:function(){return load();
			},click:function(index,time,fn){var item=self.getItems().eq(index);var klass=conf.activeClass;
			if(!item.hasClass(klass)&&(index>=0||index<this.getSize())){self.getItems().removeClass(klass);
			item.addClass(klass);
			var delta=Math.floor(conf.size/2);var to=index-delta;
			if(to>self.getSize()-conf.size){
				to--;
			}
			if(to!==index){
				return this.seekTo(to,time,fn);
			}
			}
			return self;
			}});
			if($.isFunction($.fn.mousewheel)){
				root.bind("mousewheel.scrollable",function(e,delta){var step=$.browser.opera?1:-1;
				self.move(delta>0?step:-step,50);return false;
			});
			}prev.addClass(conf.disabledClass).click(function(){self.prev();
			});
			next.click(function(){self.next();
			});
			nextPage.click(function(){self.nextPage();
			});
			prevPage.addClass(conf.disabledClass).click(function(){self.prevPage();
			});
			if(conf.keyboard){$(window).unbind("keypress.scrollable").bind("keypress.scrollable",function(evt){var el=current;
			if(!el){return;}
			if(horizontal&&(evt.keyCode==37||evt.keyCode==39)){el.move(evt.keyCode==37?-1:1);
			return evt.preventDefault();
			}
			if(!horizontal&&(evt.keyCode==38||evt.keyCode==40)){el.move(evt.keyCode==38?-1:1);
			return evt.preventDefault();
			}return true;
			});
			}
function load(){navi.each(function(){
	   	var nav=$(this);
       	if(nav.is(":empty")||nav.data("me")==self){
		nav.empty();nav.data("me",self);
		for(var i=0;i<self.getPageAmount();i++){
		var item=$("<"+conf.naviItem+"/>").attr("href",i).click(function(e){var el=$(this);
		el.parent().children().removeClass(conf.activeClass);
		el.addClass(conf.activeClass);
		self.setPage(el.attr("href"));
		return e.preventDefault();
		});
		if(i===0){
		item.addClass(conf.activeClass);
		}nav.append(item);
		}}
		else{
		var els=nav.children();
		els.each(function(i){var item=$(this);
		item.attr("href",i);
		if(i===0){
			item.addClass(conf.activeClass);
		}
		item.click(function(){nav.find("."+conf.activeClass).removeClass(conf.activeClass);
		item.addClass(conf.activeClass);
		self.setPage(item.attr("href"));
		});
		});
		}});
		if(conf.clickable){self.getItems().each(function(index,arg){var el=$(this);
		if(!el.data("set")){el.bind("click.scrollable",function(){self.click(index);
		});
		el.data("set",true);
		}});
		}
		if(conf.hoverClass){
			self.getItems().hover(function(){$(this).addClass(conf.hoverClass);
		},function(){$(this).removeClass(conf.hoverClass);
		});
			}return self;
			}load();var timer=null;
		function setTimer(){
			timer=setInterval(function(){self.next();
		},conf.interval);
		}
		if(conf.interval>0){
			root.hover(function(){clearInterval(timer);
		},function(){setTimer();
		});
		setTimer();
		}}jQuery.prototype.scrollable=function(conf){var api=this.eq(typeof conf=='number'?conf:0).data("scrollable");
		if(api){
			return api;
		}var opts={size:5,vertical:false,clickable:true,loop:false,interval:0,speed:400,keyboard:false,activeClass:'active',disabledClass:'disabled',hoverClass:null,easing:'swing',items:'.items',prev:'.prev',next:'.next',prevPage:'.prevPage',nextPage:'.nextPage',navi:'.navi',naviItem:'a',onBeforeSeek:null,onSeek:null,alert:true};
		$.extend(opts,conf);
		this.each(function(){var el=new Scrollable($(this),opts);
		$(this).data("scrollable",el);
		});
		return this;
		};
		})(jQuery);