jquery - Scroll to anchor id within iframe -

i have iframe in want scroll specific anchor. have used no luck -

window.scrollto(-37, 718); 

also have tried

function gotobyscroll(id) { var new_position = getdocument().getelementbyid(id) $('html,body').animate({ scrolltop: new_position.offsettop }, 'slow'); } 

please help.