html - jquery scrollTop offset issue -

i trying build anchor link allows panel 2 slide cover panel 1, leave black header visible:

i'm setting offset with:

'scrolltop': $target.offset().top - 140

it milisecond , jump top of page.

how can set stops in right place?

it works have written:

$('html, body').stop().animate({     'scrolltop': $target.offset().top - 140 }, 600, 'swing', function () {     window.location.hash = target; });

the first part animates scrolling, , when finished, tell window jump specific hash.

notice happens when click function has this:

window.location.hash = target;

remove callback function , prevent page jumping hash.

on unrelated note, suggest don't use hard-coded values in animation function. try instead:

'scrolltop': $target.offset().top - $("#a").offset().top;

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