var Skyline_ScrollToTop=new Class({Implements:[Options],options:{'id':'scrollToTop','className':'scrollToTop','image':'','text':'^ Scroll to Top','title':'Scroll to Top','transition':Fx.Transitions.linear,'duration':500},initialize:function(b){this.setOptions(b);this.scrollFx=new Fx.Scroll(window,{transition:this.options.transition,duration:this.options.duration});this.scrollLink=new Element('a',{'id':this.options.id,'html':this.options.text,'title':this.options.title,'class':this.options.className,'styles':{'visibility':'hidden','opacity':0},'events':{click:function(){this.scrollFx.toTop()}.bind(this)}}).inject(document.id(document.body));if(this.options.image!=''){new Element('img',{'src':this.options.image,'alt':this.options.title}).inject(this.scrollLink,'top')}if(window.getScrollTop()!=0){this.scrollLink.fade(1)}window.addEvent('scroll',function(){var a=this.scrollLink.getStyle('visibility')=='visible';if(window.getScrollTop()!=0&&!a){this.scrollLink.fade(1)}else if(window.getScrollTop()==0&&a){this.scrollLink.fade(0)}}.bind(this))}});