// Wrtie in DIVs ======================================================================================================
function file(fichier)
{
//document.getElementById('loading').innerHTML = '<img src="../graphics/ajax-loader.gif" />Chargement...';
var curtain = document.body.appendChild( document.createElement('div') );
curtain.id = "curtain";



if(window.XMLHttpRequest) // FIREFOX
xhr_object = new XMLHttpRequest();
else if(window.ActiveXObject) // IE
xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
else
return(false);

xhr_object.open("GET", fichier, false);
xhr_object.send(null);

if(xhr_object.readyState == 4) 
{
//document.getElementById('loading').innerHTML = '';
curtain.parentNode.removeChild( curtain );
return(xhr_object.responseText);

}
else
{
return(false);
}
}

<!-- Write DIV
function writediv(my_page , my_div)
{
document.getElementById(my_div).innerHTML = '';
document.getElementById(my_div).innerHTML = my_page;
}

function do_tri(link_page, my_div)
{
if(link_page != '')
{
var var_date = (new Date()).getTime();

if(my_page = file(link_page+'&p='+var_date))
 {

  writediv(my_page, my_div);
 }
}

else

writediv('<span style="color:#cc0000">ACCESS FORBIDDEN</span>');

}
// Wrtie in DIVs END ===================================================================================================