User:Frin/monobook.js

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The accompanying .css page for this skin can be added at User:Frin/monobook.css.

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 function externISBN() {
   for (var i = 0; i < document.links.length; i++) 
     {       
          var ln = document.links[i].href.match(/isbn=(.*)/);
          if (ln) {
            document.links[i].href='http://www.amazon.com/exec/obidos/ASIN/'+RegExp.$1;
          }
     }
 
 }
 
 addOnloadHook(externISBN);