function getHTTPObject(){
	if (window.ActiveXObject)
		return new ActiveXObject("Microsoft.XMLHTTP");
	else if (window.XMLHttpRequest)
		return new XMLHttpRequest();
	else {
		alert("Seu navegador não suporta AJAX.");
		return null;
	}
}
function doWork(){
	httpObject = getHTTPObject();
	if (httpObject != null) {
		httpObject.open("GET", "versiculo.php", true);
		httpObject.send(null);
		httpObject.onreadystatechange = setOutput;
	}
}
function setOutput(){
	if(httpObject.readyState == 4){
		document.getElementById('divVersiculo').innerHTML = httpObject.responseText;
		setTimeout("doWork();",20000);
	}
}