var http_request = false;

function makeRequest(url) {
  http_request = false;
  if (window.XMLHttpRequest) { // Mozilla, Safari,...
    http_request = new XMLHttpRequest();
    if (http_request.overrideMimeType) {
      http_request.overrideMimeType('text/xml');
    }
  } else if (window.ActiveXObject) { // IE
    try {
      http_request = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        http_request = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (e) { }
    }
  }
  if (!http_request) {
    alert('Cannot create XMLHTTP instance');
    return false;
  }
  http_request.onreadystatechange = alertContents;
  http_request.open('GET', url, true);
  http_request.send(null);
}

function alertContents() {
  if ((http_request.readyState == 4) && (http_request.status == 200)) {
    var xmldoc = http_request.responseXML;
    var image_node = xmldoc.getElementsByTagName('image').item(0);
    var picture = image_node.firstChild.data;
    var img_node = xmldoc.getElementsByTagName('link').item(0);
    if (img_node) {
      var img_link = img_node.firstChild.data;
    } else {
      var img_link = false;
    }
    updatePicture("banner_image", picture);
    if (img_link) { 
      updateLink("banner_link", img_link);
    }
  }
}

function get_banner() {
  var dt = new Date();
  var loc1 = location.hostname;
  new makeRequest('./ADS/current_image.php?loc1='+loc1+'&sc='+dt.getTime());
}

function updatePicture(id, picture) {
  var image = document.getElementById(id);
  image.src = "http://www.wirebuilt.com/BANNER/"+picture;
}

function updateLink(id, alink) {
  var imlink = document.getElementById(id);
  imlink.href = "http://"+alink;
}
window.onload = get_banner;