function extractQueries(referer) {
  var queries = new Array();
  var query = new String;
  referer.match(/q=([^&]+)/);
  if (RegExp.$1) {
    var match = RegExp.$1;
    var qs = match.split("+");
    for (i in qs) {
      //queries.push(unescape(qs[i]));
      query = query + "+" + unescape(qs[i]);
    }
  }
  return query.substring(1,query.length);
}
var banner_ref= extractQueries(document.referrer);
var referer = document.referrer;
//alert ("|"+banner_ref+"|");