function SetupOnLoad() {
    // tabs.Hide("_1", false);
    // tabs.Hide("_2", false);
    document.getElementById('tabsContainer').style.display = 'none';

    var imid, h, s, t, f, o = window.adjustWidthAndHeight,
        ae = LibJavascript.Events.addEvent,
        im = 0,
        dim = document.images, 
        bds = Ctrl('bodyDiv').style;
    
    ZtVWeb.getPortletInc('bodyDiv', 'postin_user').setBackgroundColor(w_color);
    t = Ctrl('textualpostit')
    t.style.resize = "none"
    //t.style.backgroundColor = i.style.backgroundColor*/
    adjustWidthAndHeight = function () {
        if (o) o.apply(null, arguments);
        // t.style.width=Max(parseInt(bds.width)-2,50)+'px'
        // t.style.height=Max(parseInt(bds.height)-2,50)+'px'
        document.getElementById('FrmMain').style.cssText = 'height:100%;width:100%;';
        document.getElementById('bodyDiv').style.cssText = 'height:100%;width:100%;';
        document.documentElement.style.height = '100%';
    }
    t.style.zIndex = 100

    f = function () {
        var j, h
        if (m_cFunction == 'view' || m_cFunction == 'query')
            return
        if (t.value != w_textualpostit)
            Set_textualpostit(t.value)
        if (document.FSender.m_cAction.value == 'discard') {} else if ((Empty(w_textualpostit) || w_textualpostit == w_scrivi_postit)) {
            j = new JSURL('postin_user?m_cAction=delete&m_cID=' + w_m_cId + '&m_cMode=hyperlink&code=' + URLenc(w_code), true)
        } else if (m_bUpdated) {
            //in Chrome NameForCaller non restituisce 'parent'
            Set_MultiCompS(parent.document.FSender.m_cLastWhere.value)
            j = new JSURL('postin_user?m_cAction=writeload&m_cID=' + w_m_cId + '&m_cMode=hyperlink&code=' + URLenc(w_code) + '&postit=' + URLenc(w_postit) +
                '&status=' + URLenc(w_status) + '&datestart=' + URLenc(WtA(w_datestart, 'T')) +
                '&datestop=' + URLenc(WtA(w_datestop, 'T')) + '&MultiCompS=' + URLenc(w_MultiCompS), true)
        }
        if (j && Empty(j.Response()) && window['fetch']) {
            h = {
                'Content-type': 'application/x-www-form-urlencoded'
            }
            if (j['userAgent'])
                h["User-Agent"] = j.userAgent
            if (j['Referer'])
                h["Referer"] = j.Referer
            fetch((SetNumberSettings.normKey ? Strtran(SetNumberSettings.normKey(''), '/stdFunctions.js', '') : ZtVWeb.SPWebRootURL) + '/servlet/postin_user', {
                method: j.methodUsed,
                body: j.prm,
                headers: h,
                keepalive: true
            }).catch(function (error) {
                console.log('There has been a problem with postin operation: ');
                console.log(error);
            });
        }
    }
    if (window.addEventListener) {
        window.addEventListener("beforeunload", f, true);
    } else if (window.attachEvent) {
        window.attachEvent("onbeforeunload", f);
    }
}