jquery - absolute position on the center of current screen position -


i have following styles:

.group-action-holder.item-9{     z-index: 8001;     position:fixed !important; }

my window appears(when invoke show() jquery method) on center of current screen position , when try scroll page windows shows on center anyway.

when change position position:absolute windows appears on same place(relative top) , scrolls rest page. desired behaviour want initially(when invoke show() jquery method) windows shows on center of screen.

is posiible ?

here working prototype using jquery.

you need query scroll bar position of window (window.scrolly) , set top offset of absolute positioned overlay panel, , take account height of window.

after that, matter of getting css styling right based on design of page.

$("body").click(function () {      var pgt = window.scrolly;      var vph = $(window).height();      var voff = pgt + vph / 2.0;      $(".overlay").offset({top: voff}).show();  });
p {    margin-top: 1000px;  /* demo */  }  p.first {    margin-top: 0;  }  .overlay {    display: none;    position: absolute;    border: 1px dotted blue;    width: 50%;    left: 25%;  }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <p class="first">first sample paragraph.... <b>click on page show overlay</b>.</p>  <p>second sample paragraph....</p>  <div class="overlay">overlay window.</div>


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