function buscaconteudo(valor)
		{
			
		  http.open("GET", "buscaconteudo.php?pagina=" + valor, true);
		  http.onreadystatechange = respostaConteudo;
		  http.send(null);
		}
		
function respostaConteudo() {
	var jsConteudo = document.getElementById("conteudo");
	if (http.readyState == 1) {
     jsConteudo.innerHTML = "Carregando conteudo.... Aguarde....";
	} 
  if (http.readyState == 4) {
	 	 jsConteudo.innerHTML = http.responseText;
	 }
}

function getHTTPObject() {
  var xmlhttp;
  /*@cc_on
  @if (@_jscript_version >= 5)
    try {
      xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (e) {
        xmlhttp = false;
      }
    }
  @else
  xmlhttp = false;
  @end @*/
  if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
    try {
      xmlhttp = new XMLHttpRequest();
    } catch (e) {
      xmlhttp = false;
    }
  }
  return xmlhttp;
}
var http = getHTTPObject();