function getData(e){e=e.replace(/[\[]/,"[").replace(/[\]]/,"]");var a=new RegExp("[?&]"+e+"=([^&#]*)").exec(location.search);return null===a?"":decodeURIComponent(a[1].replace(/\+/g," "))} 
var id = getData("id"); if (id == "#") {alert("Vuelve a la página anterior");}
var aut = getData("aut"); if (aut == "false") {auto = false;} else {auto = true;}