function topSet(idDiv,page,mode){
     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", "/includes/topset.php?page="+page+"&mode="+mode+"", false);
     xhr_object.send(null);
     if(xhr_object.readyState == 4){
		document.getElementById(idDiv).innerHTML = xhr_object.responseText;
	 }
     else return(false);
}