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

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


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"); });
};
});