gistfile1.js

function changeRGT(x) {
    var pos = 0;
    while (pos < x.length) {
        var lookin = x.substr(pos);
        var newpos = lookin.search(/"(.*?)"/);
        if (newpos == -1) { break; } // run out of things to find
        var newsearch = lookin.substr(newpos+1);
        var endpos = newsearch.indexOf('"');
        var oldstring = newsearch.substr(0, endpos);
        var newstring = oldstring.replace(/>/g, '&gt;');
        if (newstring != oldstring) {
            var r = new RegExp('"'+oldstring+'"', 'g');
            x = x.replace(r, '"'+newstring+'"');
        }
       pos = pos+newpos+endpos+2+newstring.length-oldstring.length;
    }
    return x;
}