function doAll()
{
	if ( window.XMLHttpRequest )      // Object of the current windows
	{ 
    	xhr = new XMLHttpRequest();   // Firefox, Safari, ...
	} 
	else if ( window.ActiveXObject )   // ActiveX version
	{
    	xhr = new ActiveXObject("Microsoft.XMLHTTP");  // Internet Explorer 
	} 
	else
	{
		alert("ajax non è supportato, non posso continuare");
		return;
	}
	
	xhr.onreadystatechange = function() 
	{ 
		if ( xhr.readyState != 4 )
			return;

		var doc = xhr.responseXML;   							  
		var root = doc.getElementsByTagName('feed').item(0);  
		var entry = root.getElementsByTagName('entry').item(0);
		var title = entry.getElementsByTagName('title').item(0).firstChild.nodeValue;
		var text = entry.getElementsByTagName('summary').item(0).firstChild.nodeValue;

		document.getElementById("titolo").innerHTML = title;
		document.getElementById("testo").innerHTML = text;
	};
	
	xhr.open("GET", "blog/atom.xml",  true); 
	xhr.setRequestHeader("content-type", "application/x-www-form-urlencoded");
	xhr.setRequestHeader("connection", "close");
    xhr.send(null); 
}