YAHOO.namespace("TK");YAHOO.namespace("TK.widget");TK=YAHOO.TK;$D=YAHOO.util.Dom;$E=YAHOO.util.Event;$U=YAHOO.util;$=YAHOO.util.Dom.get;$LANG=YAHOO.lang;TK.widget.SimpleScroll=new function(){var $Y=YAHOO.util;var defConfig={delay:2,speed:20,startDelay:2,scrollItemCount:1};this.decorate=function(container,config)
{container=$(container);config=TK.applyIf(config||{},defConfig);var handle={};var scrollTimeId=null,pause=false;var onScrollEvent=new $U.CustomEvent("onScroll",handle,false,$U.CustomEvent.FLAT);if(config.onScroll){onScrollEvent.subscribe(config.onScroll);}
else{onScrollEvent.subscribe(function(){for(var i=0;i<config.scrollItemCount;i++)
{container.appendChild(container.getElementsByTagName("li")[0]);}});}
var scroll=function()
{if(pause){return;}
container.scrollTop+=2;var lh=config.lineHeight||container.getElementsByTagName("li")[0].offsetHeight;if(container.scrollTop%lh<=1)
{clearInterval(scrollTimeId);onScrollEvent.fire();container.scrollTop=0;setTimeout(start,config.delay*1000);}};var start=function()
{var lh=config.lineHeight||container.getElementsByTagName("li")[0].offsetHeight;if(container.scrollHeight-container.offsetHeight>=lh)
{scrollTimeId=setInterval(scroll,config.speed);}};$E.on(container,"mouseover",function(){pause=true;});$E.on(container,"mouseout",function(){pause=false;});setTimeout(start,config.startDelay*1000);TK.apply(handle,{subscribeOnScroll:function(func,override)
{if(override===true&&onScrollEvent.subscribers.length>0)
{onScrollEvent.unsubscribeAll();}
onScrollEvent.subscribe(func);}});handle.onScroll=handle.subscribeOnScroll;return handle;};}
TK.apply=function(obj,config)
{if(obj&&config&&typeof config=='object')
{for(var p in config)
obj[p]=config[p];}
return obj;}
TK.applyIf=function(obj,config)
{if(obj&&config&&typeof config=='object')
{for(var p in config)
{if(!YAHOO.lang.hasOwnProperty(obj,p))
obj[p]=config[p];}}
return obj;}
TK.cpAttribute=function(obj,config)
{if(obj&&config&&typeof config=='object')
{for(var p in config)
{if(!YAHOO.lang.hasOwnProperty(obj,p))
obj[p]=config[p];}}
return obj;}