Userscripts.org

I cannot seem to be able to install the bot what seems to happen is that when i click install i get tranferred to a script of the bot which reads :
// ==UserScript==
// @name Facebook - Mousehunt Smart Autohunter
// @namespace Wr3cktangle
// @description A smart autohunter for the Mousehunt Facebook App
// @include http://apps.facebook.com/mousehunt/*
// ==/UserScript==

var inputs = document.getElementsByTagName("input");
var timervalue = -1;

if(inputs)
{
//loop through and find the horn timer hidden input box and get it's value
for(i = 0; i < inputs.length; i++)
{
if(inputs[i].id.indexOf("hornWaitValue") != -1)
{
timervalue = inputs[i].value;
break;
}
}

}

inputs = null;

if(timervalue > 0)
{
//calculate timeoutvalue in milliseconds
//timervalue is in seconds, so convert that, and add on [3,33) seconds randomly
//the random time is to help keep it less obvious mostly.
timeoutvalue = (parseInt(timervalue) + Math.round(Math.random() * 30) + 3) * 1000;

//alert("refresh in " + timeoutvalue );
setTimeout(function() {document.location = 'http://apps.facebook.com/mousehunt/soundthehorn...} , timeoutvalue);
}
.

At : http://userscripts.org/scripts/source/41923.use...
I have tried last week this week and even the week before last week. Am i doing something wrong please reply ASAP. Thank you.