k_DizeL,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
div.win {
display: none;
}
</style>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script>
$(function(){
var $divs = $("div.win"), $inps = $("input.win");
$inps.click(function() {
var len = $inps.filter(":checked").length
$divs.hide().slice(0,len).show()
});
});
</script>
</head>
<body>
<div class="win">window1</div>
<div class="win">window2</div>
<div class="win">window3</div>
<div class="win">window4</div>
<div class="win">window5</div>
<div class="win">window6</div>
<div class="win">window7</div>
<div class="win">window8</div>
<input type="checkbox" id="checkb" class="win"/>
<label for="checkb">Чекбокс</label>
<input type="checkbox" id="che1" class="win"/>
<label for="che1">Еще</label>
<input type="checkbox" id="fg" class="win"/>
<label for="fg">Чекбокс</label>
<input type="checkbox" id="hh" class="win"/>
<label for="hh">Еще</label>
<input type="checkbox" id="checkb" class="win"/>
<label for="checkb">Чекбокс</label>
<input type="checkbox" id="che1sd" class="win"/>
<label for="che1sd">Еще</label>
<input type="checkbox" id="asd" class="win"/>
<label for="asd">Чекбокс</label>
<input type="checkbox" id="xzxc" class="win"/>
<label for="xzxc">Еще</label>
</body>
</html>