function makeHttpRequest(url, callback_function, return_xml)
{
   var http_request = false;
   var result = true;

   if (window.XMLHttpRequest) { // Mozilla, Safari,...
       http_request = new XMLHttpRequest();
       if (http_request.overrideMimeType) {
           http_request.overrideMimeType('text/xml');
       }

   } 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('Unfortunatelly you browser doesn\'t support this feature.');
       result = false;
   }
   http_request.onreadystatechange = function() {
       if (http_request.readyState == 4) {
           if (http_request.status == 200) {
               if (return_xml) {
                   eval(callback_function + '(http_request.responseXML)');
               } else {
                   eval(callback_function + '(http_request.responseText)');
               }
           } else {
               alert('There was a problem with the request.(Code: ' + http_request.status + ')');
           }
       }
   }
   url=url+"&sid="+Math.random();
   http_request.open('GET', url, true);
   http_request.setRequestHeader("Cache-Control", "no-cache");
   http_request.send(null);
   return result;
}

function loadBanner(xml)
{
     var next_news = xml.getElementsByTagName('nextid').item(0).firstChild.nodeValue;
     
     var html_content = "<div class='newsdate nfsize'>" 
                        + xml.getElementsByTagName('date').item(0).firstChild.nodeValue 
                        + "</div>" 
                        + "<h3><a href='?page=newsArchivio#" 
                        + xml.getElementsByTagName('id').item(0).firstChild.nodeValue
                        + "'>"                         
                        + xml.getElementsByTagName('title').item(0).firstChild.nodeValue + "</a></h3>" 
                        + "<div class='newsbody nfsize'>"
                        + xml.getElementsByTagName('abstract').item(0).firstChild.nodeValue + "</div>";
                        
                        
     var html_content2 ="<div class='dash'>&nbsp;</div>"
                        + "<div class='newsnav nfsize'>"
                            + "<div class='narch'><a href='#news' onclick='nextAd(" + next_news + ")'>Saltar noticia</a></div>"
                            + "<div class='nnext'><a href='?page=newsArchivio'>Archivo</a></div>"
                        + "</div>";

                        
    // var reload_after = xml.getElementsByTagName('reload').item(0).firstChild.nodeValue;
    var next_news = xml.getElementsByTagName('nextid').item(0).firstChild.nodeValue;
    document.getElementById('news_block').innerHTML = html_content;
    document.getElementById('next_block').innerHTML = html_content2;
    
}

function nextAd(nn)
{
    var now = new Date();
    var url = './includes/ajax-news.php?&id=' + nn;
    makeHttpRequest(url, 'loadBanner', true);
}

// window.onload = nextAd(0);