RaidGroup

Example for Habrahabr

HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.0/jquery.min.js"></script>
  <span id="ageWindows">Sergey</span>, <span class="country">Russia</span>

CSS

#ageWindows {
  border: 12px solid red;
}

JavaScript

function isHourRange(from, to) {
   var now = new Date();
   var curHour = now.getHours();
   return curHour >= from && curHour < to;
}

if(isHourRange(0, 9)) {
   $('ageWindows').hide(100);
}