User talk:CmdrDan/monobook.js

function externISBN() {

var magicURL = "http://www.amazon.com/exec/obidos/ASIN/MAGICNUMBER/eldridgeto-20";

var magicRegex = /MAGICNUMBER/ig;
if(wgPageName != "Special:Booksources" && wgPageName != "Wikipedia:Book_sources"){
  for (var i = 0; i < document.links.length; i++) 
  {       
      if( document.links[i].href.match(/isbn=(.*)/) ) {
        document.links[i].href=magicURL.replace(magicRegex, RegExp.$1);
      }
  }
}

}

addOnloadHook(externISBN);