var urls = [];
//var loading = "<div style='text-align:center;'><img src='http://www.7010.ir/images/loading.gif' alt='' style='text-align:ceter;border:0px;vertical-align:middle'/>در حال دریافت</div>";
var empty = "";
urls[0] = "http://www.salamateiran.com/handler/Cities.ashx";
urls[1] = "http://www.salamateiran.com/handler/Subcats.ashx";

function loadModules(url, param, id) {

    var xmlHttp;
    //document.getElementById("" + id + "").innerHTML = loading;
    try {
        // Firefox, Opera 8.0+, Safari
        xmlHttp = new XMLHttpRequest();
    }
    
    catch (e) {
        // Internet Explorer
        try {
            xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
        }

        catch (e) {
            try {
                xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
            }
            catch (e) {
                alert("Your browser does not support AJAX!");
                return false;
            }
        }
    }
    
    xmlHttp.onreadystatechange = function() {
        if (xmlHttp.readyState == 4) {
       
            document.getElementById("" + id + "").innerHTML = xmlHttp.responseText; 
        }
        else {
            //document.getElementById("" + id + "").innerHTML = loading;
        }
    }
    xmlHttp.open("GET", urls[url]+param, true);
    xmlHttp.send(null);
    return false;
}