function zmienStyl()
{
  var url = "http://localhost/dane.txt";
  var btn1 = document.getElementById("btn1");
  btn1.disabled = true;
  startGETRequest(url, onComplete, onEnd);
}

function onComplete(responseText, responseXML)
{
  var div1 = document.getElementById("div1");
  responseText = responseText.replace("\r\n", "\n");
  arr = responseText.split("\n");
  for(indeks in arr){
    lineArr = arr[indeks].split(":");
    if(lineArr.length == 2){
      div1.style[lineArr[0]] = lineArr[1];
    }
  }
}

function onEnd()
{
  var btn1 = document.getElementById("btn1");
  btn1.disabled = false;
}