function createRequestObject(){
	var request_o; //declare the variable to hold the object.
	var browser = navigator.appName; //find the browser name
	if(browser == "Microsoft Internet Explorer"){
	
		request_o = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
	
		request_o = new XMLHttpRequest();
	}
	return request_o; //return the object
}


var http ;


function getRegioes(){
	http = createRequestObject();
	 
	
	http.open('get','internal_request.php?action=get_regioes&id=' 
			+ document.form1.pais.options[document.form1.pais.selectedIndex].text);

	http.onreadystatechange = handleRegioes; 
	
	http.send(null);
}

function getEtnia(){
	http = createRequestObject();
	
	http.open('get', 'internal_requestEtnia.php?id=' 
			+ document.form_freq.regiao.options[document.form_freq.regiao.selectedIndex].text);
	http.onreadystatechange = handleEtnias; 
	
	http.send(null);
}


function handleRegioes(){

	if(http.readyState == 4){ 
		var response = http.responseText;
		document.getElementById('regioes').innerHTML = response;
	}
	
}

function handleEtnias(){

	if(http.readyState == 4){ 
		var response = http.responseText;
		document.getElementById('etnia').innerHTML = response;
	}
	
}