function list_dados( pagina ){
  http.open("POST", pagina, true);
  http.onreadystatechange = handleHttpResponse;
  http.send(null);
}
   
function handleHttpResponse(){
  campo_select = document.frmBusca.busca_rapida_id;
  if (http.readyState == 4) {
    campo_select.options.length = 0;
    results = http.responseText.split(",");
    for( i = 1; i < results.length-1; i++ ){
      string = results[i].split( "|" );
      campo_select.options[i-1] = new Option( string[0], string[1] );
    }
  }
}
  
function getHTTPObject() {
  var req;
  try {
    if (window.XMLHttpRequest) {
      req = new XMLHttpRequest();

      if (req.readyState == null) {
        req.readyState = 1;
        req.addEventListener("load", function () {
          req.readyState = 4;
          if (typeof req.onReadyStateChange == "function")
            req.onReadyStateChange();
        }, false);
      }
      return req;
    }

    if (window.ActiveXObject) {
      var prefixes = ["MSXML2", "Microsoft", "MSXML", "MSXML3"];
      for (var i = 0; i < prefixes.length; i++) {
        try {
          req = new ActiveXObject(prefixes[i] + ".XmlHttp");
          return req;
        } catch (ex) {};
      }
    }
  } catch (ex) {}
  alert("XmlHttp Objects não é suportado pelo browser cliente");

}

var http = getHTTPObject();