function ajaxInit(){
try {
		ajaxT = new ActiveXObject("Microsoft.XMLHTTP");
		return ajaxT;
		}
		
		catch(e) {
			try {
				ajaxT = new ActiveXObject("Msxml2.XMLHTTP");
				return ajaxT;
			}
			catch(ex){
			try {
				ajaxT = new XMLHttpRequest();
				return ajaxT;
				}
			catch(exc) {
				alert("Bronwser não suporta Ajax");
				ajaxT = null;
				return ajaxT;
				}
			}
		}
	}
			

function busca(){
	ajaxInit();
	ajaxT.open("GET", "ler.php?id="+campo.busca.value, true);
	ajaxT.onreadystatechange = function(){
	 if (ajaxT.readyState == 1) {
          		document.getElementById("ler").innerHTML = "<center><img src='images/loading_x.gif'><br/><font color='#333333' size='1' face='Tahoma, Verdana, Arial'>Carregando....</font></center>";
            }
		else if(ajaxT.readyState == 4){
			document.getElementById("ler").innerHTML = ajaxT.responseText;
		}
	}
	ajaxT.send(null);
}


//OUTRO CÓDIGO

   var http_request = false;
   function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { 
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {

            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { 
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Não conseguiu criar a instancia XHTML');
         return false;
      }
      
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }

   function alertContents() {
   if(http_request.readyState == 1){
   		document.getElementById("enviado").innerHTML = "<br/><br/><center><img src='images/loading_x.gif'><br/><font color='#333333' size='1' face='Tahoma, Verdana, Arial'>Carregando....</font></center>";
	}else
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('enviado').innerHTML = result;            
         } else {
            alert('Problemas na execução do Documento.');
         }
      }
   }
   
   function get(obj) {
/*
      var poststr = "v1=" + encodeURI( document.getElementById("nome").value ) +
                    "&v2=" + encodeURI( document.getElementById("dia_salto").value )+
                    "&v3=" + encodeURI( document.getElementById("mes_salto").value )+
                    "&v4=" + encodeURI( document.getElementById("ano_salto").value )+
                    "&v5=" + encodeURI( document.getElementById("quantidade_participantes").value )+
                    "&v6=" + encodeURI( document.getElementById("telefone").value )+			
                    "&v7=" + encodeURI( document.getElementById("do_email").value )+							
                    "&v8=" + encodeURI( document.getElementById("comentarios").value );
		 alert(poststr); //linha incluída		

*/
      var poststr = "v1=" +  document.getElementById("nome").value  +
                    "&v2=" + document.getElementById("dia_salto").value +
                    "&v3=" + document.getElementById("mes_salto").value +
                    "&v4=" + document.getElementById("ano_salto").value +
                    "&v5=" + document.getElementById("quantidade_participantes").value +
                    "&v6=" + document.getElementById("telefone").value +			
                    "&v7=" + document.getElementById("do_email").value +							
                    "&v8=" + document.getElementById("comentarios").value ;					

		makePOSTRequest('enviado.php?', poststr);
   }