// JavaScript Document

function newAjax()

{

    try { // Firefox, Opera 8.0+, Safari

      aj = new XMLHttpRequest();

    } catch (e) { // Internet Explorer

      try {

        aj = new ActiveXObject("Msxml2.XMLHTTP");

      } catch (e) {

        try {

          aj = new ActiveXObject("Microsoft.XMLHTTP");

        } catch (e) {

          aj = false;

        }

      }

    }

	return aj;

}



function requisita(requisicao, URL, param, IDResposta)

{

   requisicao.open("POST", URL, true);

   requisicao.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

   requisicao.send(param);

   requisicao.onreadystatechange = function() {

    var campoResposta = document.getElementById(IDResposta);

    switch (requisicao.readyState) {

      case 2:

           campoResposta.innerHTML = 'Carregando, aguarde...';

           break;

      case 4:

           if (requisicao.status == 200) 

           {

             output = requisicao.responseText;

             campoResposta.innerHTML = output; //alert(output);            

           } else 

          {

             campoResposta.innerHTML = "Erro na resposta do servidor";

           }

           break;

    }

  }

}