Download Button

function getUrlParameters(parameter, staticURL, decode){

    var currLocation = (staticURL.length)? staticURL : window.location.search,
     parArr = currLocation.split("?")[1].split("&"),
     returnBool = true;

    for(var i = 0; i < parArr.length; i++){
   parr = parArr[i].split("=");
   if(parr[0] == parameter){
    return (decode) ? decodeURIComponent(parr[1]) : parr[1];
    returnBool = true;
   }else{
    returnBool = false;
   }
    }

    if(!returnBool) return false;
 }

 $("#url").attr("href",url);
 var url = getUrlParameters("url", "", true);
 var data = window.atob(url);

 //alert(data);
 //alert(url);

 var downloadButton = document.getElementById("espera");
 var url = document.getElementById("url").href=("http://")+data;
 var counter = 10;
 var newElement = document.createElement("p");
 newElement.innerHTML = "Você poderá baixar seu arquivo em 10 segundos.";
 var id;

 downloadButton.parentNode.replaceChild(newElement, downloadButton);

 id = setInterval(function() {
  counter--;
  if(counter < 0) {
   newElement.parentNode.replaceChild(downloadButton, newElement);
   clearInterval(id);
  } else {
   newElement.innerHTML = "Você poderá baixar seu arquivo em " + counter.toString() + " segundos.";
  }
 }, 1000);