listing 7.47.txt

function getImage()
{
  tfTextTxt = document.getElementById('tfText').value;
  tfSizeTxt = document.getElementById('tfSize').value;
  if(tfTextTxt == "" || tfSizeTxt == ""){
    alert("Prosz� wype�ni� wszystkie pola.");
    return;
  }
  params="?text=" + tfTextTxt + "&size=" + tfSizeTxt;

  url = "http://localhost/dane.php" + params;
  url = encodeURI(url);

  var btnWykonaj = document.getElementById('btnWykonaj');
  btnWykonaj.disabled = true;
  startGETRequest(url, onComplete, onEnd);
}

function onComplete(text, xml)
{
  if(text.substr(0, 5) == 'error'){
    arr = text.split("\n");
    if(arr.length == 2){
      if(arr[0] == 'error')
        alert(arr[1]);
      else
        alert("Nieprawid�owa odpowied� serwera.");
    }
  }
  else{
    var div = document.getElementById('dataDiv');
    str = "<img src='image.php?name=" + text + "' alt=''>";
    div.innerHTML = str;
  }
}

function onEnd()
{
  var btnWykonaj = document.getElementById('btnWykonaj');
  btnWykonaj.disabled = false;
}