[jQuery] slideUp, slideDown artifacts

[jQuery] slideUp, slideDown artifacts


Anyone else get slideUp, slidDown artifacts? Specially in IE elements
show for just a millisecond or so after they have been slid up. Ive
noticed it happen more often if the dive is very short. The taller the
div, the smoother the slide.
Code:
        $("#toggleSearchFormButton").toggle(
         function () {
            $("#formContainer").slideUp("fast");
         },
         function () {
            $("#formContainer").slideDown("fast");
         }
        );
The form contains hidden inputs and all sorts of fields.