function adGet(url, divId) {
  var ajax;
  if(window.ActiveXObject) {
    ajax = new ActiveXObject('Microsoft.XMLHTTP');
  }
  else if(window.XMLHttpRequest) {
    ajax = new XMLHttpRequest();
  }
  else {
    alert('didn\'t work');
  }
  
  ajax.open('GET', url, true);
  ajax.onreadystatechange = function() {
    var doc = document.getElementById(divId);
    if((ajax.readyState == 4 || ajax.readyState == 0) && ajax.status == 200) {
      doc.innerHTML = ajax.responseText;
    }
  }
  ajax.send(null);
}

function adPost(url, divId, data) {
  var ajax;
  if(window.ActiveXObject) {
    ajax = new ActiveXObject('Microsoft.XMLHTTP');
  }
  else if(window.XMLHttpRequest) {
    ajax = new XMLHttpRequest();
  }
  else {
    alert('didn\'t work');
  }
  ajax.open('POST', url, true);
  ajax.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
  ajax.onreadystatechange = function() {
    var doc = document.getElementById(divId);
    if((ajax.readyState == 4 || ajax.readyState == 0) && ajax.status == 200) {
      doc.innerHTML = ajax.responseText;
    }
  }
  ajax.send(data);
}