var TS={speed:20,maxStep:150,brakeK:5,hash:null,cB:null,rY:0,load:function(event,body,d){if(event.addEventListener){return event.addEventListener(body,d,false)}if(event.attachEvent){return event.attachEvent('on'+body,d)}},init:function(){try{var off=window.innerHeight||document.documentElement.clientHeight||document.body.clientHeight;if(document.getElementById('main').offsetHeight<=off){return}document.getElementById('topbox').style.display='block'}catch(e){}var lnks=document.getElementsByTagName('a');for(var i=0,lnk;lnk=lnks[i];i++){if(lnk.href&&lnk.href.match(/#/)&&!lnk.onclick){lnk.onclick=TS.iScroll}}},getY:function(el){var y=0;while(el.offsetParent){y+=el.offsetTop;el=el.offsetParent}return y},getTop:function(){if(document.all){return(document.documentElement.scrollTop)?document.documentElement.scrollTop:document.body.scrollTop}else{return window.pageYOffset}},gWH:function(){if(window.innerHeight){return window.innerHeight}if(document.documentElement&&document.documentElement.clientHeight){return document.documentElement.clientHeight}},gDH:function(){if(document.height){return document.height}if(document.body.offsetHeight){return document.body.offsetHeight}},iScroll:function(e){var targ;if(!e){var e=window.event}if(e.target){targ=e.target}else if(e.srcElement){targ=e.srcElement}TS.hash=targ.href.substr(targ.href.indexOf('#')+1,targ.href.length);if(TS.hash=='top'){TS.rY=0}else{TS.cB=document.getElementById(TS.hash);if(!TS.cB){return}TS.rY=TS.getY(TS.cB)}TS.scroll();return false},scroll:function(){var top=TS.getTop();if(TS.rY>top){var eD=Math.round((TS.gDH()-(top+TS.gWH()))/TS.brakeK);eD=Math.min(Math.round((TS.rY-top)/TS.brakeK),eD);var offset=Math.max(1,Math.min(eD,TS.maxStep))}else{var offset=-Math.min(Math.abs(Math.round((TS.rY-top)/TS.brakeK)),TS.maxStep)}window.scrollTo(0,top+offset);if(Math.abs(top-TS.rY)<=1||TS.getTop()==top){window.scrollTo(0,TS.rY);TS.hash=null}else{setTimeout(TS.scroll,TS.speed)}}};TS.load(window,'load',TS.init)