var http_request = false;
   
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
// FUNÇÃO QUE REALIZA O PROCESSAMENTO AJAX
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//   
   function makePOSTRequest(url,parameters,div) {
   
		http_request = false;
		local = document.getElementById(div);

		if (window.XMLHttpRequest) { // Mozilla, Safari,...
			 http_request = new XMLHttpRequest();
			 if (http_request.overrideMimeType) {
				http_request.overrideMimeType('text/html');
			 }
		  } else if (window.ActiveXObject) { // IE
			 try {
				http_request = new ActiveXObject("Msxml2.XMLHTTP");
			 } catch (e) {
				try {
				   http_request = new ActiveXObject("Microsoft.XMLHTTP");
				} catch (e) {}
			 }
		  }
		  if (!http_request) {
			 alert('Cannot create XMLHTTP instance');
			 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 == 4) {
	     if (http_request.status == 200) {
				result = http_request.responseText;
 			    local.innerHTML = unescape(result.replace(/\+/g," ")); 
         }else{ // fim (http_request.status)
		   mostra.innerHTML = "O Sistema não pôde concluir esta solicitação devido a problemas temporários com a conectividade da rede. Tente novamente mais tarde."
         }
      } // fim 
   }
   
   
	function get_url(url,d) {
		var Variaveis = "teste=23";
		makePOSTRequest(url+"&rnd="+ Math.random(), Variaveis,d);
	}