const pb_prefs = Components.classes["@mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefService);

function ProxyBar_Apply() {
    alert('Start')
    var proxy = document.getElementById("PBProxy").value.split(':');
        alert('1')
    var port = parseInt(proxy[1]);
                alert('2')
    pb_prefs.setCharPref("network.proxy.http", myPrxIP[0]);
                        alert('3')
    pb_prefs.setIntPref("network.proxy.http_port", myPrxPort);
                                alert('4')
    alert('Done')
    if (document.getElementById("pb_checkbox").checked == true) {
        pb_prefs.setIntPref("network.proxy.type", 1);
        alert('On')
    }
    else {
        pb_prefs.setIntPref("network.proxy.type", 0);
        alert('Off')
    }
}

ProxyBar_Overlay.PBProxyChanged = function()
{
    var proxy = document.getElementById("PBProxy").value.split(':');
    var port = parseInt(proxy[1]);
    if (!isNaN(port))
    {
        this.prefs.setCharPref("ftp", proxy[0]);
        this.prefs.setIntPref("ftp_port", port);
        this.prefs.setCharPref("gopher", proxy[0]);
        this.prefs.setIntPref("gopher_port", port);
        this.prefs.setCharPref("network.proxy.http", proxy[0]);
        this.prefs.setIntPref("network.proxy.http_port", port);
        this.prefs.setCharPref("socks", proxy[0]);
        this.prefs.setIntPref("socks_port", port);
        this.prefs.setCharPref("ssl", proxy[0]);
        this.prefs.setIntPref("ssl_port", port);
    }
};