este es mi codigo
Código PHP:
// here we define global variable
var ajaxdestination="";
function getdata(what,where) { // get data from source (what)
try {
xmlhttp = window.XMLHttpRequest?new XMLHttpRequest():
new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e) { /* do nothing */ }
document.getElementById(where).innerHTML ="<div class='preload'><center><img src='imagenesfondo/ajax-loader.gif'></center></div>";
// we are defining the destination DIV id, must be stored in global variable (ajaxdestination)
ajaxdestination=where;
xmlhttp.onreadystatechange = triggered; // when request finished, call the function to put result to destination DIV
xmlhttp.open("GET", what);
xmlhttp.send(null);
return false;
}
function triggered() { // put data returned by requested URL to selected DIV
if (xmlhttp.readyState == 4) if (xmlhttp.status == 200)
document.getElementById(ajaxdestination).innerHTML =xmlhttp.responseText;
}
Código PHP:
<a href="javascript:void(0);" onclick="getdata('principal.html','contenidoarriba');getdata('principalservicios.html','contenidolateralderecho');" target="_top">Inicio</a>
saludos y muchas gracias