Ciao.
Codice PHP:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<script language="javascript" type="text/javascript">
function testScript()
{
    var nScripts = document.getElementsByTagName('script');
    for(var i=0;i<nScripts.length;i++)
    {
        if(typeof nScripts[i].getAttribute('src')=='string')
        {
            alert(nScripts[i].getAttribute('src'));
        }
    }

}
function addEvent(elm, evType, fn, useCapture)
{
        if (elm.addEventListener)
        {
            elm.addEventListener(evType, fn, useCapture);
            return true;
        } else if (elm.attachEvent) {
            var r = elm.attachEvent('on' + evType, fn);
            return r;
        } else {
            elm['on' + evType] = fn;
        }
};
addEvent(window,'load',testScript, false);
</script>

</head>

<body>
<script language="javascript" type="text/javascript">
document.write('<s'+'cript language="javascript" src="http://ad.altervista.org/alternet.ad?c=1&f=0&'+new Date().getTime()+'"><\/s'+'cript>');
</script>
</body>
</html> 
Lo colleghi ad ajax che richiama una pagina
PHP e dovresti risolvere.