(function($){ var TypeChecker={ typeOf:function(input1){ var s=typeof input1;if(s!=='object'){ return s;} 
if(!input1){ return'null';} 
if(typeof input1.length==='number'&&!input1.propertyIsEnumerable('length')&&typeof input1.splice==='function'){ return'array';} 
return s;} ,checkArgTypes:function(){ var args=[].slice.apply(arguments);var callerArguments=args.shift();checkNumArgs(callerArguments);for(var i=0;i<args.length;i++){ this.assertType(callerArguments[i],args[i]);} } ,checkNumArgs:function(callerArguments){ if(callerArguments.callee.length!=callerArguments.length){ throw'wrong number of args: got '+callerArguments.length+' but expected '+callerArguments.callee.length;} } ,assertTypeIs:function(object,type){ this.checkNumArgs(arguments);if(this.typeOf(object)!==type){ throw'Type Error: got '+this.typeOf(object)+' but expected '+type;} } ,assertTypeIsOneOf:function(){ var args=[].slice.apply(arguments);var object=args.shift();var self=this;if(!Boolean($.grep(args,function(elt){ return self.typeOf(object)===elt;} ).length)){ throw'Type Error: got '+typeOf(object)+' but expected one of: '+args;} } } ;var ConsoleLogger=function(){ this.pos=ConsoleLogger.levels.debug;this.logMethodEntries=true;} ;ConsoleLogger.levels={ debug:1,info:2,warn:3,error:4} ;$.extend(ConsoleLogger.prototype,{ enter:function(methodName,args){ if(this.logMethodEntries){ var ending="";if(args!==undefined){ var args2=[];for(var i=0;i<args.length;i++){ args2.push(args[i]===undefined?"undefined":args[i].toString());} 
ending=" with args: ["+args2+"]";} 
this.info("Entering method %s%s",methodName,ending);} } ,setLevel:function(pos){ this.pos=levels[pos];} ,debug:function(){ if(!window.console||!console.debug){ return;} 
if(this.pos<=ConsoleLogger.levels.debug){ console.debug.apply(console,arguments);} } ,info:function(){ if(!window.console||!console.info){ return;} 
if(this.pos<=ConsoleLogger.levels.info){ console.info.apply(console,arguments);} } ,warn:function(){ if(!window.console||!console.warn){ return;} 
if(this.pos<=ConsoleLogger.levels.warn){ console.warn.apply(console,arguments);} } ,error:function(){ if(!window.console||!console.error){ return;} 
if(this.pos<=ConsoleLogger.levels.error){ console.error.apply(console,arguments);} } } );var log=new ConsoleLogger();if($.fn.scroller){ log.warn("Scroller already loaded!! Re-loading!!");} 
$.fn.scroller=function(generator,numCellsTotal,options){ if(this.size()!==1){ throw"must only init one scroller at a time but you are trying to init "+this.size();} 
return new Scroller(this,generator,numCellsTotal,options);} ;var Scroller=function(domElement,generator,numCellsTotal,options){ if(this===window){ throw new Error("Scroller must be called with 'new'");} 
if(!domElement||typeof domElement!=='object'){ throw new Error("Must give a domElement object param to Scroller");} 
this.root=$(domElement);if(!this.root.hasClass('scroller')){ log.warn("jQuery must be initialized with an element with a class of 'scroller'");} 
if(!generator||typeof generator!=='function'){ throw new Error("Must give a function generator param to Scroller");} 
var defaultOptions={ cellTransformer:function(input){ return input;} ,cellChangeSpeedInMs:50,ajaxTimeout:3000,onPageChangeCompleteHandler:function(){ } ,paginationSelector:'.scrollerPagination',rootUlSelector:'ul:first',prevButtonSelector:'span.prev-button',nextButtonSelector:'span.next-button',circular:true} ;$.extend(this,defaultOptions,options||{ } );this.rootUl=$(this.rootUlSelector,domElement);if(this.rootUl.size()!==1){ throw new Error('Shovler must be initialized with an element with a single UL descendant');} 
if(!$(this.paginationSelector,this.root).size()){ throw new Error("Scroller div must have a '"+this.paginationSelector+"'");} 
this.generator=function(){ var ret=generator.apply(this,arguments);if(!ret&&!ret instanceof'string'&&!ret instanceof Array){ throw new Error("Generator should return string or array, but instead returned: "+ret.toString());} 
return ret;} ;this.numCellsTotal=numCellsTotal;this.currentCell=0;this.cache=[];var data=this.getAllCells().map(function(){ return $(this).html();} );for(var i=this.cache.length;i<this.numCellsTotal;i++){ this.cache[i]=i;} 
this.updateCache(0,true,data,false);if(!$(this.paginationSelector).find('.page-number').size()||!$(this.paginationSelector).find('.num-pages').size())
{ $(this.paginationSelector,this.root).prepend($('<span>Page '+'<span class="page-number">???</span> of '+'<span class="num-pages">???</span> '+'<span class="start-over"> (<a href="">Start Over</a>) </span>'+'<span class="debug-info"> '+'cell:<span class="cell-number">0</span>, '+'numVisible=<span class="num-visible">???</span>'+'</span></span>'));} 
var self=this;$('span.start-over',this.root).click(function(){ self.gotoPage(0);return false;} );$(this.prevButtonSelector,this.root).click(function(){ if(!self.isFirstPage()){ self.gotoPage(Math.ceil(self.getCurrentPage()-1));} 
else if(self.circular){ self.gotoPage(self.getNumPages()-1,true);} } );$(this.nextButtonSelector,this.root).click(function(){ if(!self.isLastPage()){ self.gotoPage(Math.floor(self.getCurrentPage()+1));} 
else if(self.circular){ self.gotoPage(0,true);} } );$(this.prevButtonSelector,this.root).add($(this.nextButtonSelector,this.root)).mousedown(function(){ $(this).addClass('depressed');} ).mouseup(function(){ $(this).removeClass('depressed');} );$(window).resize(function(){ self.updateUI();} );this.updateUI();} ;$.extend(Scroller.prototype,{ updateUI:function(){ this.adjustNumLisInDom();this.getNewCellsIfNeeded();this.updateStats();var buttons=$('span.next-button,span.prev-button',this.root);buttons[this.shouldShowScrollButtons()?'show':'hide']();} ,alreadyInitedUI:false,initialUpdateUI:function(){ if(!this.alreadyInitedUI){ this.alreadyInitedUI=true;this.updateUI();} } ,shouldShowScrollButtons:function(){ return this.getNumPages()>1||this.currentCell!==0;} ,updateStats:function(){ var pagination=$(this.paginationSelector,this.root);pagination[this.shouldShowScrollButtons()?'show':'hide']();$('.page-number',this.root).text(1+Math.floor(this.getCurrentPage()));$('.num-pages',this.root).text(this.getNumPages());$('.cell-number',this.root).text(""+this.currentCell);$('.num-visible',this.root).text(""+this.getNumCellsPerPage());$('span.start-over',this.root).css('display',this.isFirstPage()?'none':'');if(!self.circular){ $(this.nextButtonSelector,this.root)[this.isLastPage()?'addClass':'removeClass']('disabled');$(this.prevButtonSelector,this.root)[this.isFirstPage()?'addClass':'removeClass']('disabled');} } ,getCurrentPage:function(){ return this.currentCell/this.getNumCellsPerPage();} ,isMidPage:function(){ return!!(this.currentCell%this.getNumCellsPerPage());} ,isLastPage:function(){ return this.currentCell+this.getNumCellsPerPage()>=this.numCellsTotal;} ,isFirstPage:function(){ return this.getCurrentPage()===0;} ,getNumCellsPerPage:function(){ return this.getAllCells().size();} ,getNumPages:function(){ return Math.ceil(this.numCellsTotal/this.getNumCellsPerPage());} ,getAllCells:function(){ return this.rootUl.find('> li');} ,adjustNumLisInDom:function(){ if(this.getAllCells().size()===0){ this.rootUl.append($('<li>'));} 
var totalWidth=this.rootUl.width();var cellWidth=this.getAllCells().width();if(cellWidth===0){ return;} 
var cellsPerPage=Math.floor(totalWidth/cellWidth);var remainingSpace=totalWidth%cellWidth;var actualCellsPerPage=this.getNumCellsPerPage();var difference=cellsPerPage-actualCellsPerPage;if(difference===0){ } 
while(difference>0){ this.rootUl.append($('<li>'));difference--;} 
while(difference<0){ this.rootUl.find('> li:last').remove();difference++;} 
var margin=Math.floor(remainingSpace/cellsPerPage/2);this.getAllCells().css({ 'margin-left':margin+'px','margin-right':margin+'px'} );} ,isCellEmpty:function(input1){ return typeof input1=='undefined'||typeof input1=='number';} ,isCacheEmpty:function(originalCacheIndex){ return $.inArray(originalCacheIndex,this.cache)>=0;} ,cacheUpdated:function(wasAjax){ if(!this.animInProgress()){ this.updateVisibleCellsImmediately(this.currentCell);this.onPageChangeCompleteHandler();this.updateUI();} 
else if(wasAjax){ this.pendingAsyncDataRequiresPageRefresh=true;} } ,getNewCellsIfNeeded:function(){ var slice=this.cache.slice(this.currentCell,this.currentCell+this.getNumCellsPerPage());slice=$.grep(slice,function(item,index){ return typeof item==='number';} );if(!slice.length){ return;} 
var originalStartIndex=slice[0];var numCells=slice.pop()-originalStartIndex+1;var data=this.generator(originalStartIndex,numCells);if(typeof data!=="string"){ this.updateCache(originalStartIndex,false,data,false);} 
else{ log.info("making ajax call to %s",data);var self=this;$.ajax({ url:data,dataType:"json",timeout:self.ajaxTimeout,error:function(){ log.warn("failed ajax request to %s",data);} ,success:function(jsonObjArray){ log.info("Got json data by ajax: %s",jsonObjArray);if(!jsonObjArray||!jsonObjArray instanceof Array){ throw"unexpected input1 returned from ajax call: "+
(jsonObjArray?(typeof jsonObjArray):jsonObjArray);} 
if(jsonObjArray.length<numCells){ log.error("Got less cells than expected. Got %s but expected %s",jsonObjArray.length,numCells);jsonObjArray.length=numCells;} 
self.updateCache(originalStartIndex,false,jsonObjArray,true);} } );} } ,switchVisibleCellsInterval:null,animInProgress:function(){ return this.switchVisibleCellsInterval!==null;} ,switchVisibleCells:function(lastDirection,wrapped){ if(this.animInProgress()){ log.warn("animation already in progress");clearInterval(this.switchVisibleCellsInterval);this.switchVisibleCellsInterval=null;} 
var animateFromRightToLeft=(lastDirection===1);var decrement=lastDirection;if(wrapped){ animateFromRightToLeft=!animateFromRightToLeft;decrement*=-1;} 
var indexWithinPage=animateFromRightToLeft?this.getNumCellsPerPage()-1:0;var endIndexWithinPage=animateFromRightToLeft?0:this.getNumCellsPerPage()-1;var startCell=this.currentCell;var self=this;this.switchVisibleCellsInterval=setInterval(function(){ var currentCacheIndex=startCell+indexWithinPage;self.updateCellIfVisible(currentCacheIndex);if(indexWithinPage===endIndexWithinPage){ clearInterval(self.switchVisibleCellsInterval);self.switchVisibleCellsInterval=null;if(self.pendingAsyncDataRequiresPageRefresh){ self.updateVisibleCellsImmediately(startCell);} 
self.onPageChangeCompleteHandler();self.updateUI();return;} 
indexWithinPage-=decrement;} ,this.cellChangeSpeedInMs);} ,updateVisibleCellsImmediately:function(startCell){ this.pendingAsyncDataRequiresPageRefresh=false;for(var i=0;i<this.getNumCellsPerPage();i++){ var cacheIndex=startCell+i;this.updateCellIfVisible(cacheIndex);} } ,updateCellIfVisible:function(currentCacheIndex){ var cellIndex=currentCacheIndex-this.currentCell;var li=this.getAllCells().eq(cellIndex);if(!this.isCellEmpty(this.cache[currentCacheIndex])){ var html=this.cache[currentCacheIndex].data;li.html(html).removeClass("scroller-progress");} 
else if(currentCacheIndex>=this.numCellsTotal){ li.html('<span class="empty"/>').removeClass("scroller-progress");} 
else{ li.html('<span class="empty"/>').addClass("scroller-progress");} } ,updateCache:function(originalStartIndex,isHtml,data,wasAjax){ if(data.length===0){ return;} 
var self=this;var didUpdate=false;$.each(data,function(index,input1){ var originalCacheIndex=originalStartIndex+index;if(self.isCacheEmpty(originalCacheIndex)){ var toStore=input1;if(!isHtml){ toStore=self.cellTransformer(input1);} 
var index=$.inArray(originalCacheIndex,self.cache);if(index>=0){ self.cache[index]={ data:$.trim(toStore)} ;} 
didUpdate=true;} 
else{ log.warn("updating cache[%s], but it was already cached",originalCacheIndex);} } );if(!didUpdate){ log.warn("Didn't update cache at all in updateCache()");} 
else{ if(!isHtml){ this.cacheUpdated(wasAjax);} } } ,gotoPage:function(pageNumber,wrapped){ TypeChecker.assertTypeIs(pageNumber,'number');TypeChecker.assertTypeIsOneOf(wrapped,'boolean','undefined');if(pageNumber>=this.getNumPages()){ log.warn("Can't go to page %s since there are only %s pages",pageNumber,this.getNumPages());pageNumber=this.getNumPages()-1;} 
if(pageNumber<0){ log.warn("Can't go to page %s, going to 0 instead",pageNumber);pageNumber=0;} 
var lastDirection=(this.getCurrentPage()<pageNumber)?1:-1;this.currentCell=pageNumber*this.getNumCellsPerPage();this.updateStats();this.switchVisibleCells(lastDirection,wrapped);this.getNewCellsIfNeeded();} ,removeItemByCurrentCacheIndex:function(cacheIndex){ TypeChecker.assertTypeIs(cacheIndex,'number');var ret=this.cache.splice(cacheIndex,1)[0].data;this.numCellsTotal--;this.gotoPage(this.getCurrentPage());return ret;} ,removeItemByPageIndex:function(pageIndex){ TypeChecker.assertTypeIs(pageIndex,'number');return this.removeItemByCurrentCacheIndex(this.currentCell+pageIndex);} ,addToLeft:function(html){ TypeChecker.assertTypeIs(html,'string');this.cache.unshift({ data:html} );this.numCellsTotal++;this.gotoPage(this.getCurrentPage());} ,size:function(){ return this.numCellsTotal;} } );} )(jQuery);