function transicion(curva,ms,callback){this.ant=0.01;this.done_=false;var _this=this;this.start=new Date().getTime();this.init=function(){setTimeout(function(){if(!_this.next()){callback(1);_this.done_=true;window.globalIntervalo=0;return}callback(_this.next());_this.init()},13)}this.next=function(){var now=new Date().getTime();if((now-this.start)>ms)return false;return this.ant=curva((now-this.start+.001)/ms,this.ant)}}function fx(obj,inicio,fin,propCss,u,curva,ms,cola){if(!window.globalIntervalo)window.globalIntervalo=1;else{if(cola)return setTimeout(function(){fx(obj,inicio,fin,propCss,u,curva,ms,cola)},30);else return}var t=new transicion(curva,ms,function(p){if(fin<inicio){var delta=inicio-fin;obj.style[propCss]=(inicio-(p*delta))+u}else{var delta=fin-inicio;obj.style[propCss]=(inicio+(p*delta))+u}});t.init();t=null}function senoidal(p,ant){return(1-Math.cos(p*Math.PI))/2}