function C_Whois() {
    v1 = document.dominio_form.dominio.value ;
    if (v1.length == 0) {
        alert(aIdioma['NO_DEJAR_DOMINIO_VACIO']) ;
        return (false) ;
    }

   // loop through all elements
    for (i=0; i<document.dominio_form.length; i++)
    {
        // Look for our checkboxes only
        if (document.dominio_form.elements[i].name.indexOf("ext") !=-1 )
        {
            // If any are checked then confirm alert, otherwise nothing happens
            if (document.dominio_form.elements[i].checked)
            {
                return (true)
            }
        }
    }
    alert(aIdioma['SELECCIONAR_EXTENSION']) ;
    return (false) ;
}

function C_WhoisSelect() {
    v1 = document.dominio_form.dominio.value ;
    if (v1.length == 0) {
        alert(aIdioma['NO_DEJAR_DOMINIO_VACIO']) ;
        return (false) ;
    }

    return (true);
}

function SelectAll() {
  for (var i = 0; i < document.dominio_form.elements.length; i++) {
    if( document.dominio_form.elements[i].name.substr( 0, 3) == 'ext') {
      document.dominio_form.elements[i].checked = true ;
    }
  }
}

function DeSelectAll() {
  for (var i = 0; i < document.dominio_form.elements.length; i++) {
    if( document.dominio_form.elements[i].name.substr( 0, 3) == 'ext') {
      document.dominio_form.elements[i].checked = false ;
    }
  }
}