/**
 * @license 
 * jQuery Tools 1.2.3 Scrollable - New wave UI design
 * 
 * NO COPYRIGHTS OR LICENSES. DO WHAT YOU LIKE.
 * 
 * http://flowplayer.org/tools/scrollable.html
 *
 * Since: March 2008
 * Date:    Mon Jun 7 13:43:53 2010 +0000 
 */
 /* EDIT:  Added variable "visableItems" and FOR loop to duplicate scroll items to fill out the visible space */
(function($){$.tools=$.tools||{version:'1.2.3'};$.tools.scrollable={conf:{activeClass:'active',circular:false,clonedClass:'cloned',disabledClass:'disabled',easing:'swing',initialIndex:0,item:null,items:'.items',keyboard:true,mousewheel:false,next:'.next',prev:'.prev',speed:400,vertical:false,visableItems:1,wheelSpeed:0}};function dim(el,key){var v=parseInt(el.css(key),10);if(v){return v;}
var s=el[0].currentStyle;return s&&s.width&&parseInt(s.width,10);}
function find(root,query){var el=$(query);return el.length<2?el:root.parent().find(query);}
var current;function Scrollable(root,conf){var self=this,fire=root.add(self),itemWrap=root.children(),index=0,vertical=conf.vertical;if(!current){current=self;}
if(itemWrap.length>1){itemWrap=$(conf.items,root);}
$.extend(self,{getConf:function(){return conf;},getIndex:function(){return index;},getSize:function(){return self.getItems().size();},getNaviButtons:function(){return prev.add(next);},getRoot:function(){return root;},getItemWrap:function(){return itemWrap;},getItems:function(){return itemWrap.children(conf.item).not("."+conf.clonedClass);},move:function(offset,time){return self.seekTo(index+offset,time);},next:function(time){return self.move(1,time);},prev:function(time){return self.move(-1,time);},begin:function(time){return self.seekTo(0,time);},end:function(time){return self.seekTo(self.getSize()-1,time);},focus:function(){current=self;return self;},addItem:function(item){item=$(item);if(!conf.circular){itemWrap.append(item);}else{$(".cloned:last").before(item);$(".cloned:first").replaceWith(item.clone().addClass(conf.clonedClass));}
fire.trigger("onAddItem",[item]);return self;},seekTo:function(i,time,fn){if(conf.circular&&i===0&&index==-1&&time!==0){return self;}
if(!conf.circular&&i<0||i>self.getSize()||i<-1){return self;}
var item=i;if(i.jquery){i=self.getItems().index(i);}else{item=self.getItems().eq(i);}
var e=$.Event("onBeforeSeek");if(!fn){fire.trigger(e,[i,time]);if(e.isDefaultPrevented()||!item.length){return self;}}
var props=vertical?{top:-item.position().top}:{left:-item.position().left};index=i;current=self;if(time===undefined){time=conf.speed;}
itemWrap.animate(props,time,conf.easing,fn||function(){fire.trigger("onSeek",[i]);});return self;}});$.each(['onBeforeSeek','onSeek','onAddItem'],function(i,name){if($.isFunction(conf[name])){$(self).bind(name,conf[name]);}
self[name]=function(fn){$(self).bind(name,fn);return self;};});if(conf.circular){var cloned1=self.getItems().slice(-1).clone().prependTo(itemWrap),cloned2=self.getItems().eq(1).clone().appendTo(itemWrap);for(i=2;i<=conf.visableItems;i++){var cloned3=self.getItems().eq(i).clone().appendTo(itemWrap);cloned3.addClass(conf.clonedClass);};cloned1.add(cloned2).addClass(conf.clonedClass);self.onBeforeSeek(function(e,i,time){if(e.isDefaultPrevented()){return;}
if(i==-1){self.seekTo(cloned1,time,function(){self.end(0);});return e.preventDefault();}else if(i==self.getSize()){self.seekTo(cloned2,time,function(){self.begin(0);});}});self.seekTo(0,0);}
var prev=find(root,conf.prev).click(function(){self.prev();}),next=find(root,conf.next).click(function(){self.next();});if(!conf.circular&&self.getSize()>1){self.onBeforeSeek(function(e,i){setTimeout(function(){if(!e.isDefaultPrevented()){prev.toggleClass(conf.disabledClass,i<=0);next.toggleClass(conf.disabledClass,i>=self.getSize()-1);}},1);});}
if(conf.mousewheel&&$.fn.mousewheel){root.mousewheel(function(e,delta){if(conf.mousewheel){self.move(delta<0?1:-1,conf.wheelSpeed||50);return false;}});}
if(conf.keyboard){$(document).bind("keydown.scrollable",function(evt){if(!conf.keyboard||evt.altKey||evt.ctrlKey||$(evt.target).is(":input")){return;}
if(conf.keyboard!='static'&&current!=self){return;}
var key=evt.keyCode;if(vertical&&(key==38||key==40)){self.move(key==38?-1:1);return evt.preventDefault();}
if(!vertical&&(key==37||key==39)){self.move(key==37?-1:1);return evt.preventDefault();}});}
$(self).trigger("onBeforeSeek",[conf.initialIndex]);}
$.fn.scrollable=function(conf){var el=this.data("scrollable");if(el){return el;}
conf=$.extend({},$.tools.scrollable.conf,conf);this.each(function(){el=new Scrollable($(this),conf);$(this).data("scrollable",el);});return conf.api?el:this;};})(jQuery);