bookmarklet function to change people's "your" into "you're"

your.js

(function your(node) {
  if (node.nodeType == 3) { // text-node
    node.nodeValue = node.nodeValue.replace(/\b(you)(r)\b/ig, "$1'$2e");
  } else {
    var c = node.childNodes;
    for (var i = 0; i < c.length; i++)
      your(c[i]);
  }
})(document.body);