Show HTML literally page

<!DOCTYPE html>
<html>
<head>
<script>

function setCookie(cname,cvalue,exdays)
{
var d = new Date();
d.setTime(d.getTime()+(exdays*24*60*60*1000));
var expires = "expires="+d.toGMTString();
document.cookie = cname+"="+cvalue+"; "+expires;
}

function getCookie(cname)
{
var name = cname + "=";
var ca = document.cookie.split(';');
for(var i=0; i<ca.length; i++)
  {
  var c = ca[i].trim();
  if (c.indexOf(name)==0) return c.substring(name.length,c.length);
  }
return "";
}

function checkCookie()
{
var user=getCookie("username");
if (user!="")
  {
  alert("Welcome again " + user);
  }
else
  {
  user = prompt("Please enter your name:","");
  if (user!="" && user!=null)
    {
    setCookie("username",user,30);
    }
  }
}

</script>
</head>
<body onload="checkCookie()">
</body>
</html>

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