function submit_form()
    {
    var do_submit = check_form_submit(); 


    if (do_submit==true) document.form_sql.submit();
    }

function check_form_submit()
    {
    var do_submit  = true;
    var error       = '';
    var obj         = '';
    
    // CHECK NAME
    error   = check_all( 'First name' , document.form_sql.first_name.value , 'extend_word' , 1 , 255 , true );
    obj     = document.getElementById('header_first_name');
    
    if (error!='')  { obj.style.color = '#ff0000'; do_submit = false; }
    else            { obj.style.color = '#666666'; }


    // CHECK LAST NAME
    error   = check_all( 'Last name' , document.form_sql.last_name.value , 'extend_word' , 1 , 255 , true );
    obj     = document.getElementById('header_last_name');
    
    if (error!='')  { obj.style.color = '#ff0000'; do_submit = false; }
    else            { obj.style.color = '#666666'; }


    // CHECK MAIL
    error   = check_all( 'email' , document.form_sql.mail.value , 'email' , 5 , 255 , true );
    obj     = document.getElementById('header_mail');
    
    if (error!='')  { obj.style.color = '#ff0000'; do_submit = false; }
    else            { obj.style.color = '#666666'; }


    return do_submit;
    }