how to keep submenu open after redirecting another page

how to keep submenu open after redirecting another page

I am making menu having submenu where i click on parent menu submenu will open but when i am clicking on submenu and redirecting to another page sub  menu should be open on that page .....

here is my code ------


HTML CODE

<!DOCTYPE html>
<html>
<head>
<meta http-equiv='Content-Type' content='text/html; charset=utf-8' />
<meta http-equiv='X-UA-Compatible' content='IE=edge,chrome=1' />
<link rel='stylesheet' type='text/css' href='styles.css' />
<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js'></script>
<script type='text/javascript' src='menu_jquery.js'></script>
</head>
<body>
<div id='cssmenu'>
<ul>
   <li class='active'><a href='index.html'><span>Home</span></a></li>
   <li class='has-sub'><a href='#'><span>Products</span></a>
      <ul>
         <li><a href='readme.html'><span>Widgets</span></a></li>
         <li><a href='#'><span>Menus</span></a></li>
         <li class='last'><a href='#'><span>Products</span></a></li>
      </ul>
   </li>
  
   <li><a href='#'><span>Contact</span></a></li>
</ul>
</div>
</body>
</html>


CSS-----

@charset 'UTF-8';
/* Base Styles */
#cssmenu,
#cssmenu ul,
#cssmenu li,
#cssmenu a {
  margin: 0;
  padding: 0;
  border: 0;
  list-style: none;
  font-weight: normal;
  text-decoration: none;
  line-height: 1;
  font-family: 'Lato', sans-serif;
  font-size: 14px;
  position: relative;
}
#cssmenu a {
  line-height: 1.3;
  padding: 6px 15px;
}
#cssmenu {
  width: 200px;
}
#cssmenu > ul > li {
  cursor: pointer;
  background: #000;
  border-bottom: 1px solid #4c4e53;
}
#cssmenu > ul > li:last-child {
  border-bottom: 1px solid #3e3d3c;
}
#cssmenu > ul > li > a {
  font-size: 13px;
  display: block;
  color: #ffffff;
  text-shadow: 0 1px 1px #000;
  background: #64676e;
  background: -moz-linear-gradient(#64676e 0%, #4c4e53 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #64676e), color-stop(100%, #4c4e53));
  background: -webkit-linear-gradient(#64676e 0%, #4c4e53 100%);
  background: linear-gradient(#64676e 0%, #4c4e53 100%);
}
#cssmenu > ul > li > a:hover {
  text-decoration: none;
}
#cssmenu > ul > li.active {
  border-bottom: none;
}
#cssmenu > ul > li.active > a {
  background: #ffffff;
  background: -moz-linear-gradient(#ffffff 0%, #f8faf0 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #ffffff), color-stop(100%, #f8faf0));
  background: -webkit-linear-gradient(#ffffff 0%, #f8faf0 100%);
  background: linear-gradient(#ffffff 0%, #f8faf0 100%);
  color: #4e5800;
  text-shadow: 0 1px 1px #f8faf0;
}
#cssmenu > ul > li.has-sub > a:after {
  content: '';
  position: absolute;
  top: 10px;
  right: 10px;
  border: 5px solid transparent;
  border-left: 5px solid #ffffff;
}
#cssmenu > ul > li.has-sub.active > a:after {
  right: 14px;
  top: 12px;
  border: 5px solid transparent;
  border-top: 5px solid #4e5800;
}
/* Sub menu */
#cssmenu ul ul {
  padding: 0;
  display: none;
}
#cssmenu ul ul a {
  background: #ffffff;
  display: block;
  color: #797979;
  font-size: 13px;
}
#cssmenu ul ul li {
  border-bottom: 1px solid #c9c9c9;
}
#cssmenu ul ul li.odd a {
  background: #e5e5e5;
}
#cssmenu ul ul li:last-child {
  border: none;
}
______________________________________________ 


js code
_________________________________


$( document ).ready(function() {
$('#cssmenu ul ul li:odd').addClass('odd');
$('#cssmenu ul ul li:even').addClass('even');
$('#cssmenu > ul > li > a').click(function() {
  $('#cssmenu li').removeClass('active');
  $(this).closest('li').addClass('active');
  var checkElement = $(this).next();
  if((checkElement.is('ul')) && (checkElement.is(':visible'))) {
    $(this).closest('li').removeClass('active');
    checkElement.slideUp('normal');
  }
  if((checkElement.is('ul')) && (!checkElement.is(':visible'))) {
    $('#cssmenu ul ul:visible').slideUp('normal');
    checkElement.slideDown('normal');
  }
  if($(this).closest('li').find('ul').children().length == 0) {
    return true;
  } else {
    return false;
  }
});
});