ti basta riprendere quell'esempio per la sfocatura e poi lo modifichi.
Un esempio di partenza, senza jquery e con un javascript che potrebbe esser scritto meglio:
codice HTML:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Documento senza titolo</title>
<style type="text/css">
<!--
body {
background-color: #ccf; color:#000000
}
#cover { width:100%; height:100%; position:absolute; top:0; bottom:0; left:0; right:0; background-color:rgba(255,255,255,0.5); z-index:1; display:none}
#cover div{ width:300px; height:300px; margin:50px auto; border:10px solid #fff; border-radius:10px; background-color:#fff; padding-top:30px}
.wrapper {
background-color:#fff;
width:90%; margin:0 auto;
box-shadow:
0px 0px 0px 10px rgba(255,255,255,1),
1px 1px 3px 10px rgba(0,0,0,0.2);
-webkit-transition:
opacity 0.4s linear,
-webkit-transform 0.4s ease-in-out,
box-shadow 0.4s ease-in-out;
-moz-transition:
opacity 0.4s linear,
-moz-transform 0.4s ease-in-out,
box-shadow 0.4s ease-in-out;
-o-transition:
opacity 0.4s linear,
-o-transform 0.4s ease-in-out,
box-shadow 0.4s ease-in-out;
-ms-transition:
opacity 0.4s linear,
-ms-transform 0.4s ease-in-out,
box-shadow 0.4s ease-in-out;
transition:
opacity 0.4s linear,
transform 0.4s ease-in-out,
box-shadow 0.4s ease-in-out;
}
.blur{
box-shadow: 0px 0px 20px 10px rgba(255,255,255,1);
-webkit-transform: scale(0.9);
-moz-transform: scale(0.9);
-o-transform: scale(0.9);
-ms-transform: scale(0.9);
transform: scale(0.9);
opacity: 0.7;
background-color:#fff
}
.blur *{
text-shadow: 0px 0px 10px rgba(0, 0, 0, 0.9);
color: rgba(0, 0, 0, 0);
opacity: 0.5;}
-->
</style>
<script type="text/javascript">
function sfocatura () {
document.getElementById('cover').style.display='block';
var sfoca = document.getElementById("wrapper")
sfoca.className="blur"
}
function ripristina () {
document.getElementById('cover').style.display='none';
var sfoca = document.getElementById("wrapper")
sfoca.className="wrapper";
}
</script>
</head>
<body onload="sfocatura()">
<div id="cover" onclick="ripristina()">
<div>clicca qui per chiudere il div che copre il contenuto e visualizzarlo senza sfocatura</div>
</div>
<div id="wrapper"><p>questo div ha inizialmente un effetto sfocatura</p>
<p><img src="immagine.gif" width="300" height="300" /></p>
</div>
</body>
</html>