A bookmarklet that prompts the user for a search pattern and lists all links on the current page that match it.

gistfile1.js

// javascript:(function(){var x,nD,z,i;x=prompt("Pattern:", "");if(x!=null){nD=window.open().document;nD.writeln('<pre>');z=document.links;for(i=0;i<z.length;++i){if(z[i].href.indexOf(x)!=-1){nD.writeln(z[i].href);}}nD.writeln('</pre>');nD.close();}})();

javascript:(
   function(){
       var x,nD,z,i;
       x=prompt("Pattern:", "");
       if(x!=null) {
           nD = window.open().document;
           nD.writeln('<pre>');
           z = document.links;
           for (i = 0; i < z.length; ++i) {
               if (z[i].href.indexOf(x) != -1 ) {
                   nD.writeln(z[i].href);
               }
           }
           nD.writeln('</pre>');
           nD.close();
       }
   }
)();