Bookmarklet for applying ROT13

rot13-bookmark.js

javascript:var coding = "abcdefghijklmnopqrstuvwxyzabcdefghijklmABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLM"; function rot13(t) { for (var r = "",i=0;i<t.length;i++) { character = t.charAt(i); position = coding.indexOf(character); if (position > -1) character = coding.charAt(position + 13); r += character; } return r; } S=window.getSelection(); function t(N) { return N.nodeType == N.TEXT_NODE; } function r(N) { if (t(N)) N.data = rot13(N.data); } for (j=0;j<S.rangeCount;++j) { var g=S.getRangeAt(j), e=g.startContainer, f=g.endContainer, E=g.startOffset, F=g.endOffset, m=(e==f); if(!m||!t(e)) { /* rot13 each text node between e and f, not including e and f. */ q=document.createTreeWalker(g.commonAncestorContainer, NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_TEXT, null, false); q.currentNode=e; for(N=q.nextNode(); N && N != f; N = q.nextNode()) r(N); } if (t(f)) f.splitText(F); if (!m) r(f); if (t(e)) { r(k=e.splitText(E)); if(m)f=k; e=k;} if (t(f)) g.setEnd(f,f.data.length); } void 0