buonasera a tutti...
mi trovo con questo codice diprova
codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type="text/javascript" language="javascript">
   function get(page,destination) 
      {
      makeRequest(page, destination);
      }

   var http_request = false;
   function makeRequest(url, destination) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
            // set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            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(destination);
      http_request.open('GET', url, true);
      http_request.send(null);
   }

   function alertContents(destination) {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            destr="document.getElementById('"+destination+"').innerHTML = result;";
            eval(destr);
            //document.getElementById(''+destination+'').innerHTML = result;           
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
</script>
  </head>
    <body>
    <input type="button" name="test" value="test" onclick="get('test.php?page=http://www.google.it','pagina');">
    <div id="pagina">
    </div>
    </body>
</html>


in questo passaggio
codice:
      http_request.onreadystatechange = alertContents(destination);

codice:
            result = http_request.responseText;
            destr="document.getElementById('"+destination+"').innerHTML = result;";
            eval(destr);
destinatione viene passata ma non viene aggiornato il contenuto del div!

cosa sbaglio??