First of all, this is a support forum. Let us all be respectful. We never use that language here. This happens because you put in the wrong code in your headers.
You put
<script src="http://gnarlyscape.smfforfreex.com/jquery.js"></script>
It should be
<script src="http://gnarlyscape.smfforfree4.com/jquery.js"></script>
But this is enough
<script src="jquery.js"></script>
.
How do you change it when it's redirecting? First disable javascript.
To do that in FireFox,
Tools>Option>Content>Uncheck Enable Javascript.
Then go to your forum and change the code.