[jQuery] slideToggle "flickers" on slideDown in FF but not IE

[somnamblst]

The flicker or flash of white I am struggling to find a solytion for
is only happening when slideToggle slides down,  the initial slideDown
slideUp do not flicker. Flicker occurs  in FF, but not in IE.


$(document).ready(function() {
        initSlideboxes();
        function initSlideboxes()
{
$('#slidebar').slideDown(1000);
setTimeout(function()
{
  $('#slidebar').slideUp(3000);

}, 5000);


        $('#slidebar').html($('#hidebar').html());
        $('#slidebartrigger').click(function(){$
('#slidebar').slideToggle("slow"); });


};
});