Hide div when in top of page with jquery -

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When I scroll the page to the top and when it does not come with jquery, I want to hide a div I am trying. / P>

Any way to do this?

EDIT: By concealing and showing I mean it gets erased and get out.

Scroll event and use scrollTop () 
  $ (window). on ("scroll", function {var scrollpace = $ (window) .scrollTop (); if (scrollpost & lt; = 0) {$ (".dvnidsehiding") .FadeOut ();} and {$ (" Edit.   
 Edit: The  scrollTop  query has been updated, as if jQuery provides a compatibility layer if Element is  window .

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