function intval(v){v=parseInt(v);return isNaN(v)?0:v;}function getPos(e){var l=0;var t=0;var w=intval(e.style.width);var h=intval(e.style.height);var wb=e.offsetWidth;var hb=e.offsetHeight;while(e.offsetParent){l+=e.offsetLeft+(e.currentStyle?intval(e.currentStyle.borderLeftWidth):0);t+=e.offsetTop+(e.currentStyle?intval(e.currentStyle.borderTopWidth):0);e=e.offsetParent;}l+=e.offsetLeft+(e.currentStyle?intval(e.currentStyle.borderLeftWidth):0);t+=e.offsetTop+(e.currentStyle?intval(e.currentStyle.borderTopWidth):0);return{x:l,y:t,w:w,h:h,wb:wb,hb:hb};}function getScroll(){var t,l,w,h;if(document.documentElement&&document.documentElement.scrollTop){t=document.documentElement.scrollTop;l=document.documentElement.scrollLeft;w=document.documentElement.scrollWidth;h=document.documentElement.scrollHeight;}else if(document.body){t=document.body.scrollTop;l=document.body.scrollLeft;w=document.body.scrollWidth;h=document.body.scrollHeight;}return{t:t,l:l,w:w,h:h};}function scroller(el,duration){if(typeof el!='object'){el=document.getElementById(el);}if(!el)return;var z=this;z.el=el;z.p=getPos(el);z.s=getScroll();z.clear=function(){window.clearInterval(z.timer);z.timer=null};z.t=(new Date).getTime();z.step=function(){var t=(new Date).getTime();var p=(t-z.t)/duration;if(t>=duration+z.t){z.clear();window.setTimeout(function(){z.scroll(z.p.y,z.p.x)},13);}else{st=((-Math.cos(p*Math.PI)/2)+0.5)*(z.p.y-z.s.t)+z.s.t;sl=((-Math.cos(p*Math.PI)/2)+0.5)*(z.p.x-z.s.l)+z.s.l;z.scroll(st,sl);}};z.scroll=function(t,l){window.scrollTo(l,t)};z.timer=window.setInterval(function(){z.step();},13);}