function __eraFormBuilderDoPostBack()
    {
        prepareFormForPosting();
        __doPostBack(updatePanelId, true);
    }

    function __eraFormBuilderSubmit()
    {
        if(canPost == true)
        {
             if(isValid())
            {
                __eraFormBuilderDoPostBack();
            }
        }
    }

    document.forms.MainForm.onsubmit = function()
    {
        if(canPost == true)
        {
             if(isValid())
            {
                __eraFormBuilderDoPostBack();
            }
        }
    };