LADYX,
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
#elements div {
display: none;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(function() {
var n = 5, divs = $('#elements div').get();
for ( ; n--; ) {
$(divs.splice(Math.random()*divs.length|0,1)).prependTo('#elements').show();
}
});
</script>
</head>
<body>
<div id="elements">
<div id="container-1">
Текст 1
</div>
<div id="container-2">
Текст 2
</div>
<div id="container-3">
Текст 3
</div>
<div id="container-4">
Текст 4
</div>
<div id="container-5">
Текст 5
</div>
</div>
</body>
</html>