function ajax(url,div) { 
mostra=document.getElementById(div);

    req = null; 

    if (window.XMLHttpRequest) { 
        req = new XMLHttpRequest(); 
        req.onreadystatechange = processReqChange; 
        req.open("GET",url,true); 
        req.send(null); 
  
    } else if (window.ActiveXObject) { 
        req = new ActiveXObject("Microsoft.XMLHTTP"); 
        if (req) { 
        req.onreadystatechange = processReqChange; 
        req.open("GET",url,true); 
        req.send(); 
        } 
    } 
} 

function processReqChange() 
{ 

    if (req.readyState == 4) { 
		
        if (req.status ==200) { 
            
			mostra.innerHTML = req.responseText; 
			
        } else { 
            alert("Houve um problema ao obter os dados:\n" + req.statusText); 
        } 
    } 
}