function postData(url, data, callback) {
    var timeOut = 120000, complete = false, defaultResponse = "{}";
    var IFRAME = document.createElement("iframe"), FORM = document.createElement("form");
    var processResponse = function(resp) {
        $(IFRAME).remove();
        var response = decodeURI(resp);
        if (callback) callback(response);
    };
    $(IFRAME).appendTo(document.body).css('display', 'none');
    function onloader() {

        var err = false, name;
        try { name = IFRAME.contentWindow.name }
        catch (e) { err = true; }
        if (err || name==undefined) {
            IFRAME.onload = onloader;
            IFRAME.contentWindow.location = 'about:blank';
            setTimeout(function() {
                if (!complete) {
                    $(IFRAME).unbind();
                    complete = true;
                    processResponse(defaultResponse);
                };
            }, timeOut);
        } else if (IFRAME.contentWindow.name.length == 0) {
            IFRAME.onload = onloader;
            var DOCUMENT = IFRAME.contentWindow.document;
            if (!DOCUMENT.body) DOCUMENT.appendChild(DOCUMENT.createElement('body'));
            $(FORM).appendTo(DOCUMENT.body).attr("action", url).attr("method", "post").attr("accept-charset", "utf-8").attr("enctype", "application/x-www-form-urlencoded");
            for (var x in data) $("<input type='hidden'/>").attr("name", x).val(data[x]).appendTo(FORM);
            FORM.submit();
        } else {
            //alert(IFRAME.contentWindow.name);
            complete = true;
            processResponse(IFRAME.contentWindow.name);
            $(IFRAME).unbind();
        }
    }
    IFRAME.onload = onloader;
    IFRAME.contentWindow.location = 'about:blank';
};