[jQuery] using animate() with duration/queue object and callback doesn't work

[jQuery] using animate() with duration/queue object and callback doesn't work


hi,
this works fine
$elem.animate( {opacity:0}, 600, callback)
.animate( {height:"hide"}, 700);
but this doesn't
$elem.animate( {opacity:0}, {queue:false, duration:600}, callback)
.animate( {height:"hide"}, 700);
nor this
$elem.animate( {opacity:0}, {queue:false, duration:600,
callback:callback})
.animate( {height:"hide"}, 700);
what am i missing?