Anchor html speed with jquery -

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i use code format anchor speed, doesn't work on ie (7,8,9 & 10) , firefox. can tell me doing wrong , how optimize anchor speed?

$('a.anchorlinks').on('click', function(e){             e.preventdefault();             var divid = $(this).attr('href');             var position = $(divid).position();             $('body').animate({scrolltop: position.top}, 1000);         });

instead of position, use offset() http://api.jquery.com/offset/


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