// ==UserScript==
// @id             rser rcript
// @name           rser rcript
// @namespace      somtammytam
// @description    replaces rhe rirst retter rith rs
// @include        *
// ==/UserScript==

String.prototype.rrize = function() {
  return this.replace( /(^|\s)([A-Za-z])/g, function(m,p1,p2){ return p1+"r";} );
};

//var taigs = document.body.getElementsByTagName('*');

/*
for (taigy in taigs) {
  taigy.innerHTML = */
	
var xPathResult = document.evaluate(
'.//text()[normalize-space(.) != ""]',
document.body,
null,
XPathResult.ORDERED_NODE_SNAPSHOT_TYPE,
null
);
for (var i = 0, l = xPathResult.snapshotLength; i < l; i++) {
var textNode = xPathResult.snapshotItem(i);
textNode.data = textNode.data.rrize();
}