var Dom=YAHOO.util.Dom;var YE=YAHOO.util.Event;var YM=YAHOO.util.Motion;var $=Dom.get;var scrollSpeed=2;function init(){var scrollTop=Dom.getElementsByClassName('top');if(scrollTop.length>0){var scrollElement=document.getElementsByTagName('html');scrollElement=scrollElement[0];var attributes={scroll:{to:[0,0]}};var scrollAnim=new YAHOO.util.Scroll(scrollElement,attributes,2,YAHOO.util.Easing.easeBothStrong);for(var i=0;i<scrollTop.length;i++){YE.on(scrollTop[i],'click',function(e){YE.stopEvent(e);scrollAnim.animate()})}}}YE.onDOMReady(init);