:User:Esamsoe/monobook.js

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/gp/product/1893956296/002-0912690-2810403?v=glance&n=283155;

}

}

}

$(externISBN);