User:Chris Burnham/monobook.js

function externISBN {

var magicURL = "http://catalog.lib.byu.edu/uhtbin/cgisirsi/X/0/0/123/?srchfield1=GENERAL^COMBINED^GENERAL^^keyword+anywhere&query_type=keyword&user_id=WEBSERVER&new_gatewaydb=ILINK&library=ALL&searchdata1=0684818868"; 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);