function TriggerWhoIs()
{
    $(document).ready(function(){       
        $('input[name=domain]').keyup(function(){            
            loading(); 
            $.post('procesar-whois.php', {domain: $('input[name=domain]').val(), extension: $('#extension').val()},function(data){$('#rst').html(data);});               
        });
        $('#extension').change(function(){
            loading(); 
            $.post('procesar-whois.php', {domain: $('input[name=domain]').val(), extension: $('#extension').val()},function(data){$('#rst').html(data);});               
        });
    });
}

function loading()
{
    $('#rst').html('<img alt="cargando" src="style/images/loading.gif" />');    
}