Yon Yonson,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
#elements div{
display: none;
}
</style>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script>
$(function () {
var divs = $('#elements div'), div;
div = divs.eq(Math.floor(Math.random() * divs.length));
div.show()
});
</script>
</head>
<body>
<div id="elements">
<div id="container1">
text 1
</div>
<div id="container2">
text 2
</div>
<div id="container3">
text 3
</div>
</div>
</body>
</html>