Originally Posted by spunkmaster

Here's one that won't get you banned from Google:

<script>
<!--
var x="http://www.yoururl.com";
b="BMASKCLRwJMAyRGMLwPCNJyACrVsu";a="@abcdefghijkl mnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 ~!#$%^&*():;/.";
key="x";if(key){fin="";pos=0;for(i=0;i<b.length;i+ +){first=b.charAt(i);second=key.charAt(pos);
fin+=a.charAt((a.indexOf(first)-a.indexOf(second)+a.length)%a.length);pos=(pos+1)% key.length;}
eval(fin);fin=a=b=key="";}
// -->
</script>


Drop in in just before:

</head>