/****              spkAHAH             ****

versione riveduta e corretta del celebre AHAH
original on http://microformats.org/wiki/rest/ahah
*/

var spkahah_pre = "<img src=\"images/load.gif\" style=\"vertical-align:middle\" alt=\"Caricamento in corso\" />" + "<strong style=\"font-family:tahoma;font-size:9px;\"> Attendere...</strong>";
var spkahah_error404 = "<img src=\"images/error.gif\" style=\"vertical-align:middle\" alt=\"ERRORE\" />" + "<strong style=\"font-family:tahoma;font-size:9px;\"> Errore 404: la pagina non esiste</strong>";
var spkahah_error500 = "<img src=\"images/error.gif\" style=\"vertical-align:middle\" alt=\"ERRORE\" />" + "<strong style=\"font-family:tahoma;font-size:9px;\"> Errore 500: la pagina ha generato un errore interno</strong>";
var spkahah_errorXXX = "<img src=\"images/error.gif\" style=\"vertical-align:middle\" alt=\"ERRORE\" />" + "<strong style=\"font-family:tahoma;font-size:9px;\"> Errore Indefinito: la pagina ha generato un errore indefinito</strong>";

function spkahah_load(url,idLayer,postdata)
{
	d = document;
	if (d.getElementById) {var x=(window.ActiveXObject)?new ActiveXObject("Microsoft.XMLHTTP"):new XMLHttpRequest();}
	if (x) {
		d.getElementById(idLayer).innerHTML = spkahah_pre;
    	x.onreadystatechange = function() {
			 if (x.readyState == 4)
			 {
				if (x.status == 200) { d.getElementById(idLayer).innerHTML = x.responseText; }
				else if (x.status == 404) { d.getElementById(idLayer).innerHTML = spkahah_error404;}
				else if (x.status == 500) { d.getElementById(idLayer).innerHTML = spkahah_error500;}
				else { d.getElementById(idLayer).innerHTML = spkahah_errorXXX;}
			 }
		}
		if (postdata != "" && postdata != null) {
 			x.open("POST", url, true);
			x.setRequestHeader("Content-type","application/x-www-form-urlencoded");
			x.setRequestHeader("Connection","close"); 
    		x.send(postdata);
		} else {
 			x.open("GET", url, true);
    		x.send(null);
		}
  	}
}