google_ad_url = '';
google_date = new Date();
google_random = google_date.getTime();
google_org_error_handler = window.onerror;

function quoted(str) {
  return (str != null) ? '"' + str + '"' : '""';
}

function google_encodeURIComponent(str) {
  if (typeof(encodeURIComponent) == 'function') {
    return encodeURIComponent(str);
  } else {
    return escape(str);
  }
}

function google_write_tracker(tracker_event) {
  var qloc = window.google_ad_url.indexOf('?');
  var img_src = 'http://pagead2.googlesyndication.com/pagead/imp.gif?event=';
  img_src += tracker_event;
  if (qloc != -1 && qloc+1 < window.google_ad_url.length) {
    img_src += '&' + window.google_ad_url.substring(qloc+1);
  }
  var img_tag = '<i' + 'mg height="1" width="1" border="0" ' +
                'src=' + quoted(img_src) +
                ' />';
  document.write(img_tag);
}

function google_append_url(param, value) {
  if (value) {
    window.google_ad_url += '&' + param + '=' + value;
  }
}

function google_append_url_esc(param, value) {
  if (value) {
    google_append_url(param, google_encodeURIComponent(value));
  }
}

function google_append_color(param, value) {
  if (value && typeof(value) == 'object') {
    value = value[window.google_random % value.length];
  }
  google_append_url('color_' + param, value);
}

function google_get_user_data() {
  var javaEnabled = navigator.javaEnabled();
  var tz = -google_date.getTimezoneOffset();

  if (window.screen) {
    google_append_url("u_h", window.screen.height);
    google_append_url("u_w", window.screen.width);
    google_append_url("u_ah", window.screen.availHeight);
    google_append_url("u_aw", window.screen.availWidth);
    google_append_url("u_cd", window.screen.colorDepth);
  }

  google_append_url("u_tz", tz);
  google_append_url("u_his", history.length);
  google_append_url("u_java", javaEnabled);

  if (navigator.plugins) {
    google_append_url("u_nplug", navigator.plugins.length);
  }
  if (navigator.mimeTypes) {
    google_append_url("u_nmime", navigator.mimeTypes.length);
  }
}

function google_show_ad() {
  var w = window;
  w.onerror = w.google_org_error_handler;

  if (w.google_ad_format) {
    google_is_zero_ad_format=((w.google_ad_format).indexOf('0ads'))>0;
  } else {
    google_is_zero_ad_format=false;
  }

  if (google_is_zero_ad_format) {
    if (w.google_num_0ad_slots) {
      w.google_num_0ad_slots = w.google_num_0ad_slots +1;
    } else {
      w.google_num_0ad_slots = 1;
    }
    
    if (w.google_num_0ad_slots>1) {
      return;
    }
  } else {
    if (w.google_num_ad_slots) {
      w.google_num_ad_slots = w.google_num_ad_slots + 1;
    } else {
      w.google_num_ad_slots = 1;
    }

    if (w.google_num_slots_to_rotate) {
      w.google_prev_ad_formats = null;
      if (w.google_num_slot_to_show == null) {
        w.google_num_slot_to_show = w.google_random % w.google_num_slots_to_rotate
                                    + 1;
      }
      if (w.google_num_slot_to_show != w.google_num_ad_slots) {
        return;
      }
    } else if (w.google_num_ad_slots > 3 && w.google_ad_region == null) {
      return;
    }
  }

  w.google_ad_url = 'http://pagead2.googlesyndication.com/pagead/ads?';
  w.google_ad_client = w.google_ad_client.toLowerCase();
  if (w.google_ad_client.substring(0,3) != 'ca-') {
     w.google_ad_client = 'ca-' + w.google_ad_client;
  }