Forum Link to original quote links to image location
 

The small icon in a quote box (to the right of the user's name) that is supposed to link to the original post that is quoted from has stopped working on my forums.

Instead of linking to the post, it now just opens a browser window with the icon. When you hover the mouse over the icon you get a text box saying "Click here to enlarge". So it is just linking to the image location itself:

Code:
/images/buttons/viewpost-right.png
http://www.petethomas.co.uk/examples/quotelink.jpg

I don't know when this started to go wrong, but I know it used to work fine - you'd click on the icon and go to the post.

Can anyone please help?